The Photometric Performance and Calibration of the HST Advanced Camera For Surveys

Abstract

We present the photometric calibration of the HST Advanced Camera for Surveys (ACS). We give here an overview of the performance and calibration of the 2 CCD cameras, the Wide Field Channel (WFC) and the High Resolution Channel (HRC), and a description of the best techniques for reducing ACS CCD data. On-orbit observations of spectrophotometric standard stars have been used to revise the pre-launch estimate of the instrument response curves to best match predicted and observed count rates. Synthetic photometry has been used to determine zeropoints for all filters in 3 magnitude systems and to derive interstellar extinction values for the ACS photometric systems. Due to the CCD internal scattering of long wavelength photons, the width of the PSF increases significantly in the near-IR and the aperture correction for photometry with near-IR filters depends on the spectral energy distribution of the source. We provide encircled energy curves and a detailed recipe to correct for the latter effect. Transformations between the ACS photometric systems and the UBVRI and WFPC2 systems are presented. In general, two sets of transformations are available: 1 based on the observation of 2 star clusters; the other on synthetic photometry. We discuss the accuracy of these transformations and their sensitivity to details of the spectra being transformed. Initial signs of detector degradation due to the HST radiative environment are already visible. We discuss the impact on the data in terms of dark rate increase, charge transfer inefficiency, and hot pixel population.

arXiv comment101 pages, 29 figures, 31 tables; PASP accepted

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• The Carnegie-Chicago Hubble Program. VII. The Distance to M101 via the Optical Tip of the Red Giant Branch Method
• The Resolved Stellar Halo of NGC 253
• Color-Magnitude Diagrams of Resolved Stars in Virgo Cluster Dwarf Galaxies
• Optical and IR Photometry of Globular Clusters in NGC1399: Evidence for Color-Metallicity Nonlinearity
• CLASH: Accurate Photometric Redshifts with 14 HST bands in Massive Galaxy Cluster Cores
• A VLT/FLAMES study of the peculiar intermediate-age Large Magellanic Cloud star cluster NGC 1846 - I. Kinematics
• The Cluster of Blue Stars Surrounding the M31 Nuclear Black Hole
• Old globular clusters in magellanic-type dwarf irregular galaxies
• Resolving the Stellar Outskirts of M81: Evidence for a Faint, Extended Structural Component
• Structural Parameters of Seven SMC Intermediate-Age and Old Star Clusters
• Stellar Clusters in NGC 1313: Evidence for Infant Mortality
• Helium-Core White Dwarfs in the Globular Cluster NGC 6397
• The ACS Nearby Galaxy Survey Treasury II. Young Stars and their Relation to Halpha and UV Emission Timescales in the M81 Outer Disk
• The Distribution of Ultra-Diffuse and Ultra-Compact Galaxies in the Frontier Fields
• Mutual Orbits and Masses of Six Transneptunian Binaries
• The Young, Massive, Star Cluster Sandage-96 After the Explosion of SN 2004dj in NGC 2403
• The effects of charge transfer inefficiency (CTI) on galaxy shape measurements
• A Deep, Wide-Field, and Panchromatic View of 47 Tuc and the SMC with HST: Observations and Data Analysis Methods
• The Luminosity Function of Star Clusters in 20 Star-Forming Galaxies Based on Hubble Legacy Archive Photometry
• Virgo's Intracluster Globular Clusters as Seen by the Advanced Camera for Surveys
• The cluster population of the irregular galaxy NGC 4449 as seen by the Hubble Advanced Camera for Surveys
• The Spatially-Resolved Star Formation History of the M31 Outer Disc
• A New Hubble Space Telescope Distance to NGC 1569: Starburst Properties and IC 342 Group Membership
• The SLUGGS Survey: Wide Field Imaging of the Globular Cluster System of NGC 4278
• HD 100453: A Link Between Gas-Rich Protoplanetary Disks and Gas-Poor Debris Disks
• 21-cm synthesis observations of VIRGOHI 21 - a possible dark galaxy in the Virgo Cluster
• HST/ACS observations of shell galaxies: inner shells, shell colours and dust
• A quartet of black holes and a missing duo: probing the low-end of the Mbh - sigma relation with the adaptive optics assisted integral-field spectroscopy
• Star-forming blue ETGs in two newly discovered galaxy overdensities in the HUDF at z=1.84 and 1.9: unveiling the progenitors of passive ETGs in cluster cores
• Optical studies of the ultraluminous X-ray source NGC1313 X-2
• New Constraints on Mass-Dependent Disruption of Star Clusters in M51
• New Hubble Space Telescope imaging of the counterparts to six ultraluminous X-ray sources
• New insights on the Galactic Bulge Initial Mass Function
• Globular Clusters in the Outer Galactic Halo: AM-1 and Palomar 14
• Origins of Type Ibn SNe 2006jc/2015G in interacting binaries and implications for pre-SN eruptions
• A new extensive catalog of optically variable AGN in the GOODS Fields and a new statistical approach to variability selection
• New Cataclysmic Variables and other Exotic Binaries in the Globular Cluster 47 Tucanae
• An Imaging Study of the Globular Cluster Systems of NGC 1407 and NGC 1400
• Predicting Stellar-Mass Black Hole Populations in Globular Clusters
• Star Counts in the Globular Cluster Omega Centauri. I. Bright Stellar Components
• Surface Brightness Fluctuations from archival ACS images: a stellar population and distance study
• Wide-Field Hubble Space Telescope Observations of the Globular Cluster System in NGC1399
• The ACS Nearby Galaxy Survey Treasury. X. Quantifying the Star Cluster Formation Efficiency of Nearby Dwarf Galaxies
• Ages of the Bulge globular clusters NGC 6522 and NGC 6626 (M28) from HST Proper-motion-cleaned Color-Magnitude Diagrams
• The Hubble Space Telescope Treasury Program on the Orion Nebula Cluster
• Low-Mass X-ray Binaries and Globular Clusters in Centaurus A
• High resolution reddening map in the direction of the stellar system Terzan 5
• Star Formation History of the Hubble Ultra Deep Field: Comparison with the HDFN
• The Environmental Dependence of Galaxy Properties at z=2
• The HST/ACS Coma Cluster Survey: VII - Colour Gradients in Giant and Dwarf Early-Type Galaxies
• Frontier Fields : Combining HST, VLT and Spitzer data to explore the $z$$\sim$8 Universe behind the lensing cluster MACS0416$-$2403
• Stellar populations and Star Formation History of the Metal-Poor Dwarf Galaxy DDO 68
• The optical counterpart to the X-ray transient IGR J18245-2452 in the globular cluster M28
• Multi-wavelength Hubble Space Telescope photometry of stellar populations in NGC288
• An HST/ACS View of the Inhomogeneous Outer Halo of M31
• The Ellipticities of Cluster Early-type Galaxies from z~1 to z~0: No Evolution in the Overall Distribution of Bulge-to-Disk Ratios
• The Morphological Demographics of galaxies in the ACS Hubble Ultra Deep Parallel Fields
• HST Photometry for the Halo Stars in the Leo Elliptical NGC 3377
• The Araucaria Project: The effect of blending on the Cepheid distance to NGC 300 from Advanced Camera for Surveys images
• SN Hunt 248: a super-Eddington outburst from a massive cool hypergiant
• Spectroscopically Confirmed Lyman-Alpha Emitters from Redshift 5 to 7 Behind Ten Galaxy Cluster Lenses
• The Spectral Energy Distribution of the Coldest Known Brown Dwarf
• Tracing the outer halo in a giant elliptical to 25 Reff
• The Ages of Globular Clusters in NGC 4365 Revisited with Deep HST Observations
• Holmberg Ix: The Nearest Young Galaxy
• Dual Stellar Halos in the Standard Elliptical Galaxy M105 and Formation of Massive Early-Type Galaxies
• The ACS Survey of Galactic Globular Clusters XI: The Three-Dimensional Orientation of the Sagittarius Dwarf Spheroidal Galaxy and its Globular Clusters
• RR Lyrae Variables in Two Fields in the Spheroid of M31
• Hubble Space Telescope Observations of Nine High-Redshift ESSENCE Supernovae
• On the magnitude difference between the main sequence turn off and the red giant branch bump in Galactic globular clusters
• Young star clusters in interacting galaxies - NGC 1487 and NGC 4038/4039
• A new red giant-based distance modulus of 13.3 Mpc to the Antennae galaxies and its consequences
• The galaxy-wide distributions of mean electron density in the HII regions of M51 and NGC 4449
• The old environment of the faint calcium-rich supernova SN 2005cz
• Photometry of Magellanic Cloud clusters with the Advanced Camera for Surveys - II. The unique LMC cluster ESO 121-SC03
• The ACS LCID Project. VIII. The short-period Cepheids of Leo A
• White Dwarf - Red Dwarf Systems Resolved with the Hubble Space Telescope: I. First Results
• The binary fraction in the globular cluster M10 (NGC 6254): comparing core and outer regions
• Dark Matter in the Galaxy Cluster CL J1226+3332 at Z=0.89
• The ACS LCID project VII: the blue stragglers population in the isolated dSph galaxies Cetus and Tucana
• The bursty star formation history of the Fornax dwarf spheroidal galaxy revealed with the HST
• On the Radial Distribution of White Dwarfs in the Globular Cluster NGC 6397
• The low-mass Initial Mass Function in the young cluster NGC 6611
• Hubble Space Telescope Survey of the Perseus Cluster: II. Photometric scaling relations in different environments
• On the remote Galactic globular cluster NGC 2419
• Multi-Epoch HST Observations of IZw18: Characterization of Variable Stars at Ultra-Low Metallicities
• On the distance and reddening of the starburst galaxy IC10
• Multiwavelength photometry in the Globular Cluster M2
• Galaxy evolution in a complex environment: a multi-wavelength study of HCG 7
• HST/ACS Direct Ages of the Dwarf Elliptical Galaxies NGC 147 and NGC 185
• The Stellar Populations of M33's Outer Regions II: Deep ACS Imaging
• The Blue Hook Populations of Massive Globular Clusters
• The early-type galaxies NGC 1407 and NGC 1400 - I: spatially resolved radial kinematics and surface photometry
• A close look at the Centaurus A group of galaxies: I. Metallicity distribution functions and population gradients in early-type dwarfs
• The Hubble Space Telescope Cluster Supernova Survey: III. Correlated Properties of Type Ia Supernovae and Their Hosts at 0.9 < z < 1.46
• Hubble Space Telescope Identification of the Optical Counterparts of Ultraluminous X-ray Sources in M51
• The Light Echo Around Supernova 2003gd in Messier 74
• Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud: II. Relative ages and distances for six ancient globular clusters
• Photometric determination of the mass accretion rate of pre-main sequence stars. IV. Recent star formation in NGC 602
• On the white dwarf cooling sequence of the globular cluster Omega Centauri
• Hot Horizontal Branch stars in omega Centauri: clues about their origin from the cluster Color Magnitude Diagram
• The Initial Mass Function of the Stellar Association NGC 602 in the Small Magellanic Cloud with Hubble Space Telescope ACS Observations
• Star Formation History in two fields of the Small Magellanic Cloud Bar
• Point spread function tails and the measurements of diffuse stellar halo light around edge-on disc galaxies
• The Chrysalis Opens? Photometry from the Eta Carinae HST Treasury Project, 2002-2006
• A Catalog of Bright Star Clusters in the Interacting Galaxy M51
• Ultra-Compact Dwarfs in the Core of the Coma Cluster
• A Seven-Day Multi-Wavelength Flare Campaign on AU Mic I: High-Time Resolution Light Curves and the Thermal Empirical Neupert Effect
• Deep HST/ACS Photometry of the M81 Halo
• The bottom of the white dwarf cooling sequence in the old open cluster NGC 2158
• The young stellar population at the center of NGC 205
• Stellar classification from single-band imaging using machine learning
• The Star-Forming Region NGC 346 in the Small Magellanic Cloud with Hubble Space Telescope ACS Observations I. Photometry
• The Discovery of Remote Globular Clusters in M33
• Quantifying the AGN-driven outflows in ULIRGs (QUADROS) II: evidence for compact outflow regions from HST [OIII] imaging observations
• Star formation in the outskirts of DDO 154: A top-light IMF in a nearly dormant disc
• The 3-Dimensional Distribution of Dust in NGC 891
• The globular clusters and star formation history of the isolated, quiescent ultra-diffuse galaxy DGSAT I
• Absolute Flux Calibration of the IRAC Instrument on the Spitzer Space Telescope using Hubble Space Telescope Flux Standards
• The Globular Cluster System of the Virgo Dwarf Elliptical Galaxy VCC 1087
• HST and Spitzer Observations of the Host Galaxy of GRB 050904: A Metal-Enriched, Dusty Starburst at z=6.295
• X-ray and optical variability of the ultraluminous X-ray source NGC 1313 X-2
• Controversial Age Spreads from the Main Sequence Turn-Off and Red Clump in Intermediate-Age Clusters in the LMC
• The Young Cluster Population of M82 Region B
• First Constraints on Rings in the Pluto System
• Imaging of the Stellar Population of IC10 with Laser Guide Star Adaptive Optics and the Hubble Space Telescope
• Adaptive optics imaging and optical spectroscopy of a multiple merger in a luminous infrared galaxy
• Deep HST Imaging in NGC 6397: Stellar Dynamics
• Hubble Space Telescope observations of an extraordinary flare in the M87 jet
• Radiation Tolerance of Fully-Depleted P-Channel CCDs Designed for the SNAP Satellite
• Isolated OB Associations in Stripped HI Gas Clouds
• Ancient stars beyond the Local Group: RR Lyrae variables and Blue Horizontal Branch stars in Sculptor Group Dwarf Galaxies
• Trans-Neptunian Objects with Hubble Space Telescope ACS/WFC
• Morphologies and stellar populations of galaxies in the core of Abell 2218
• ACS photometry of the globular cluster B514
• Multiple stellar populations in Magellanic Cloud clusters. II. Evidence also in the young NGC1844?
• RR Lyrae variables in M32 and the disk of M31
• Hubble Space Telescope proper motion (HSTPROMO) catalogs of Galactic globular clusters. IV. Kinematic profiles and average masses of blue straggler stars
• Globular Cluster Systems of Early-type Galaxies in Low-density Environments
• Star Formation in the Outer Filaments of NGC 1275
• The Distance to M101 Hosting Type Ia SN 2011fe Based on the Tip of the Red Giant Branch
• A Chandra view of NGC 3621: a bulgeless galaxy hosting an AGN in its early phase?
• Hierarchical Structure Formation and Modes of Star Formation in Hickson Compact Group 31
• Hubble Space Telescope survey of the Perseus Cluster -IV: Compact stellar systems in the Perseus Cluster core and Ultra Compact Dwarf formation in star forming filaments
• An Extremely Bright Echo Associated With SN 2002hh
• Star formation histories in mergers: The spatially resolved properties of the early-stage merger LIRGs IC 1623 and NGC 6090
• Dwarf spheroidals in the M81 Group - Metallicity distribution functions and population gradients
• Toward an internally consistent astronomical distance scale
• HST search for M subdwarf binaries
• The Star Cluster System in the Nearby Starburst Galaxy M82
• Late-time Flattening of Type Ia Supernova Light Curves: Constraints From SN 2014J in M82
• Galaxy populations in the Antlia cluster. II. Compact elliptical galaxy candidates
• Weak-Lensing Detection at z~1.3: Measurement of the Two Lynx Clusters with Advanced Camera for Surveys
• Evidence for a constant IMF in early-type galaxies based on their X-ray binary populations
• Globular cluster systems of six shell galaxies
• Giant scattering cones in obscured quasars
• The Carnegie-Chicago Hubble Program. V. The Distances to NGC 1448 and NGC 1316 via the Tip of the Red Giant Branch
• Optical Surface Brightness Fluctuations of shell galaxies towards 100 Mpc
• A detailed study of the main sequence of the Globular Cluster NGC 6397: can we derive constraints on the existence of multiple population?
• The Peculiar Globular Cluster System of the S0 Galaxy NGC 7457
• Hubble Space Telescope Observations of Star Clusters in M101
• Optical Observations of the Type Ic Supernova 2007gr in NGC 1058 and Implications for the Properties of its Progenitor
• Hubble Space Telescope observations of the afterglow, supernova and host galaxy associated with the extremely bright GRB 130427A
• Observational Properties of Type Ib/c Supernova Progenitors in Binary Systems
• The Deepest HST Color-Magnitude Diagram of M32: Evidence for Intermediate-Age Populations
• The surface brightness profile of the remote cluster NGC 2419
• Irradiated, colour-temperature-corrected accretion discs in ultraluminous X-ray sources
• Massive Star Cluster Formation and Destruction in Luminous Infrared Galaxies in GOALS
• Spectral Evidence for Heating at Large Column Mass in Umbral Solar Flare Kernels I: IRIS NUV Spectra of the X1 Solar Flare of 2014 Oct 25
• The distance to NGC1316 (Fornax A): yet another curious case
• Constraining star formation rates in cool-core brightest cluster galaxies
• Photometric Oscillations of Low Luminosity Red Giant Stars
• A Far-UV Survey of M 80: X-ray Source Counterparts, Strange Blue Stragglers and the Recovery of Nova T Sco
• The stellar population content of the thick disk and halo of the Milky Way analogue NGC 891
• A Re-Evaluation of the Evolved Stars in the Globular Cluster M13
• Multi-wavelength observations of a rich galaxy cluster at z ~ 1: the HST/ACS colour-magnitude diagram
• The Globular Cluster System of the Coma cD Galaxy NGC 4874 from Hubble Space Telescope ACS and WFC3/IR Imaging
• A puzzling millisecond pulsar companion in NGC 6266
• Pegasus W: An Ultra-Faint Dwarf Galaxy Outside the Halo of M31 Not Quenched by Reionization
• The white dwarf population of NGC 6397
• The dynamical state of the Globular Cluster M10 (NGC 6254)
• Constraints on Stellar Flare Energy Ratios in the NUV and Optical From a Multiwavelength Study of GALEX and Kepler Flare Stars
• Deep Chandra Monitoring Observations of NGC 4649: II. Wide-Field Hubble Space Telescope Imaging of the Globular Clusters
• Optical and X-ray Observations of M31N 2007-12b: An Extragalactic Recurrent Nova with a Detected Progenitor?
• ASASSN-15lh: A Superluminous Ultraviolet Rebrightening Observed by Swift and Hubble
• The Astrophysical Distance Scale III: Distance to the Local Group Galaxy WLM using Multi-Wavelength Observations of the Tip of the Red Giant Branch, Cepheids, and JAGB Stars
• Structural Parameters of Mayall II = G1 in M31
• Unveiling the core of the Globular Cluster M15 in the Ultraviolet
• Critical Differences and Clues in Eta Car's 2009 Event
• Determination of the Local Hubble Constant from Virgo Infall Using TRGB Distances
• The Tip of the Red Giant Branch Distances to Type Ia Supernova Host Galaxies. III. NGC 4038/39 and NGC 5584
• Not-So-Simple Stellar Populations in the Intermediate-age Large Magellanic Cloud Star Clusters NGC 1831 and NGC 1868
• Hubble Space Telescope Proper Motions along the Sagittarius Stream: I. Observations and Results for Stars in Four Fields
• The Araucaria Project: The Distance to NGC 300 from the Red Giant Branch Tip using HST/ACS imaging
• A Hubble Space Telescope Survey for Novae in M87. I. Light and Color Curves, Spatial Distributions and the Nova Rate
• The Globular Cluster Systems of Abell 1185
• The ancient stellar population of M32: RR Lyr Variable stars confirmed
• Modeling the chemical evolution of Omega Centauri using three-dimensional hydrodynamical simulations
• The changing-type SN 2014C may come from an 11-$M_{\odot }$ star stripped by binary interaction and violent eruption
• Carbon Monoxide in Comet 9P/Tempel 1 before and after the Deep Impact Encounter
• Extra-Nuclear Starbursts: Young Luminous Hinge Clumps in Interacting Galaxies
• The Carnegie-Chicago Hubble Program. IV. The Distances to NGC 4424, NGC 4526, and NGC 4536 via the Tip of the Red Giant Branch
• A Photometric Survey of Globular Cluster Systems in Brightest Cluster Galaxies
• Discovery of the Pre-Main Sequence Population of the Stellar Association LH 95 in the Large Magellanic Cloud with Hubble Space Telescope ACS Observations
• RR Lyrae-based Distances for 39 Nearby Dwarf Galaxies Calibrated to Gaia eDR3
• On the relation between metallicity and RGB color in HST/ACS data
• The Nature of the Ultraluminous Oxygen-Rich Supernova Remnant in NGC 4449
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XX. Ages of single and multiple stellar populations in seven bulge globular clusters
• The PIPER Survey: I. An Initial Look at the Intergalactic Globular Cluster Population in the Perseus Cluster
• An Ancient Metal-Poor Population in M32, and Halo Satellite Accretion in M31, Identified by RR Lyrae Stars
• HST/ACS colour-magnitude diagrams of M31 globular clusters
• HST/ACS Imaging of Omega Centauri: Optical Counterparts of Chandra X-Ray Sources
• Young stellar populations in early-type dwarf galaxies; occurrence, radial extent and scaling relations
• Interstellar-Medium Mapping in M82 Through Light Echoes Around Supernova 2014J
• An Echo of Supernova 2008bk
• Exemplary Merging Clusters: Weak-lensing and X-ray Analysis of the Double Radio Relic Merging Galaxy Clusters MACS 1752.0+4440 and ZWCL 1856.8+6616
• A Panchromatic View OF NGC 602: Time-Resolved Star Formation with the Hubble and Spitzer Space Telescopes
• Cluster and nebular properties of the central star-forming region of NGC 1140
• The extended structure of the remote cluster B514 in M31. Detection of extra-tidal stars
• Three clusters of the SMC from ACS/WFC HST archive data: NGC 265, K~29 and NGC 290 and their fields
• BVI Photometry and the Luminosity Function of the Globular Cluster M92
• A population of binaries in the Asymptotic Giant Branch of 47 Tucanae?
• A Dramatic Decrease in Carbon Star Formation in M31
• Ultracompact Blue Dwarf Galaxies: Hubble Space Telescope Imaging and Stellar Population Analysis
• Galaxy counterparts of intervening high-z sub-DLAs/DLAs and MgII absorbers towards gamma-ray bursts
• The Connection Between X-ray Binaries and Star Clusters in NGC 4449
• The SLUGGS Survey: HST/ACS Mosaic Imaging of the NGC 3115 Globular Cluster System
• The Optical Counterpart of NGC 1313 X-1
• The Tip of the Red Giant Branch Distance to the Perfect Spiral Galaxy M74 Hosting Three Core-Collapse Supernovae
• Properties of the HII region populations of M51 and NGC 4449 from Halpha images with ACS on HST
• Using the Bullet Cluster as a Gravitational Telescope to Study z~7 Lyman Break Galaxies
• Low radiative efficiency accretion at work in active galactic nuclei: the nuclear spectral energy distribution of NGC4565
• Color Bimodality in M87 Globular Clusters
• The horizontal branch luminosity vs metallicity in M31 globular clusters
• X-ray Binaries in the Ultrahigh Encounter Rate Globular Cluster NGC 6388
• From the CMD of Omega Centauri and (super-)AGB stellar models to a Galactic plane passage gas purging chemical evolution scenario
• Fundamentals of the Dwarf Fundamental Plane
• Discovery of a double Blue Straggler sequence in M15: new insight into the core-collapse process
• Structural Parameters of the M87 Globular Clusters
• Calibration of BVRI Photometry for the Wide Field Channel of the HST Advanced Camera for Surveys
• Luminosity functions of globular clusters in five nearby spiral galaxies using HST/ACS images
• Discovery of near-ultraviolet counterparts to millisecond pulsars in the globular cluster 47 Tucanae
• Probing the Nature of the G1 Clump Stellar Overdensity in the Outskirts of M31
• The not so simple globular cluster $\omega$ Cen. I. Spatial distribution of the multiple stellar populations
• Newly Identified Star Clusters in M33. II. Radial HST/ACS Fields
• Spatial distribution and evolution of the stellar populations and candidate star clusters in the Blue Compact Dwarf I Zwicky 18
• Tracing the Peculiar Dark Matter Structure in the Galaxy Cluster CL 0024+17 with Intracluster Stars and Gas
• A metal-poor ultra compact dwarf galaxy at a kiloparsec distance from the low-mass elliptical galaxy FCC47
• NGC2298: a globular cluster on its way to disruption
• The Cepheid distance to the maser-host galaxy NGC 4258: Studying systematics with the Large Binocular Telescope
• Confirmation of Hostless Type Ia Supernovae Using Hubble Space Telescope Imaging
• A Lighthouse Effect in Eta Carinae
• Deep HST Imaging in 47 Tucanae: A Global Dynamical Model
• NIR Counterparts to ULXs (III): Completing the photometric survey and selected spectroscopic results
• Discovery of the most isolated globular cluster in the local universe
• Simulating the infrared sky with a Spritz
• Newly Identified Star Clusters in M33. I. Integrated Photometry and Color-Magnitude Diagrams
• CG X-1: an eclipsing Wolf-Rayet ULX in the Circinus galaxy
• A Blue Tilt in the Globular Cluster System of the Milky Way-like Galaxy NGC 5170
• ChaMPlane Deep Galactic Bulge Survey. I. Faint accretion-driven binaries in the Limiting Window
• An optical/NIR survey of globular clusters in early-type galaxies. I. Introduction and data reduction procedures
• Wide-field HST/ACS images of M81: The Population of Compact Star Clusters
• HUDF-JD2: Mid-infrared Evidence for a z~2 Luminous Infrared Galaxy
• A wide field map of intracluster globular clusters in Coma
• Size growth of red-sequence early-type galaxies in clusters in the last 10 Gyr
• Hubble Space Telescope Proper Motions of Individual Stars in Stellar Streams: Orphan, Sagittarius, Lethe, and the New "Parallel" Stream
• Deep multi-telescope photometry of NGC 5466. I. Blue Stragglers and binary systems
• The Evolution of Field Early-Type Galaxies in the FDF and WHDF
• Testing Metal Poor Stellar Models and Isochrones with HST Parallaxes of Metal Poor Stars
• HST Discovery of a z = 3.9 Multiply Imaged Galaxy Behind the Complex Cluster Lens WARPS J1415.1+36 at z = 1.026
• A detailed study of the enigmatic cluster M82F
• RXJ0848.6+4453: The Evolution of Galaxy Sizes and Stellar Populations in a z=1.27 Cluster
• The Enigmatic (Almost) Dark Galaxy Coma P: Distance Measurement and Stellar Populations from HST Imaging
• Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268
• Constraining the age of the NGC 4565 HI Disk Warp: Determining the Origin of Gas Warps
• Star formation history of And XVIII: a dwarf spheroidal galaxy in isolation
• Multiband photometric decomposition of nuclear stellar disks
• Study of HST counterparts to Chandra X-ray sources in the Globular Cluster M71
• Massive Star Cluster Formation and Destruction in Luminous Infrared Galaxies in GOALS II: An ACS/WFC3 Survey of Nearby LIRGs
• The Formation Epoch of Early-Type Galaxies in the z ~ 0.9 CL1604 Supercluster
• The Ultraviolet Spectral Energy Distributions of Quiescent Black Holes and Neutron Stars
• The globular cluster system in NGC5866: optical observations from HST Advanced Camera for Surveys
• Detection of Surface Brightness Fluctuations in Elliptical Galaxies imaged with the Advanced Camera for Surveys. B- and I-band measurements
• Constraining the mass of the GRB 030329 progenitor
• The VISIR@VLT Mid-IR view of 47Tuc: A further step in solving the puzzle of RGB mass loss
• Hubble Space Telescope Imaging of the Outburst Site of M31 RV. II. No Blue Remnant in Quiescence
• The quest for the largest depleted galaxy core: supermassive black hole binaries and stalled in-falling satellites
• The Mass Function of omega Centauri down to 0.15 M_s
• A Spectroscopic and Photometric Exploration of the C/M Ratio in the Disk of M31
• Sizes, Half-Mass Densities, and Mass Functions of Star Clusters in the Merger Remnant NGC 1316: Clues to the Fate of Second-Generation Globular Clusters
• Extremely metal-poor galaxy DDO 68: the LBV, H-alpha shells and the most luminous stars
• Hubble Space Telescope Photometry of Globular Clusters in M81
• Tycho-Gaia Astrometric Solution Parallaxes and Proper Motions for Five Galactic Globular Clusters
• The Star Cluster System in the Local Group Starburst Galaxy IC 10
• Imaging of star clusters in unperturbed spiral galaxies with the Advanced Camera for Surveys. I. The low luminosity galaxy NGC 45
• High-Resolution Optical and Near-Infrared Images of the FS Tauri Circumbinary Disk
• Identification of Faint Chandra X-ray Sources in the Core-Collapsed Globular Cluster NGC 6752
• A grid of Synthetic Spectra for Hot DA White Dwarfs and Its Application in Stellar Population Synthesis
• Globular Clusters and Spur Clusters in NGC 4921, the Brightest Spiral Galaxy in the Coma Cluster
• HST/ACS Photometry of Old Stars in NGC 1569: The Star Formation History of a Nearby Starburst
• HST Imaging of the Local Volume Dwarf Galaxies Pisces A&B: Prototypes for Local Group Dwarfs
• Hubble Space Telescope survey of the Perseus Cluster -III: The effect of local environment on dwarf galaxies
• Evidence for metallicity spreads in three massive M31 globular clusters
• GeMS/GSAOI photometric and astrometric performance in dense stellar fields
• The star cluster - field star connection in nearby spiral galaxies I. Data analysis techniques and application to NGC 4395
• Draining the Local Void
• Signatures of Tidal Disruption in Ultra-Faint Dwarf Galaxies: A Combined HST, Gaia, and MMT/Hectochelle Study of Leo V
• On the radial extent of the dwarf irregular galaxy IC10
• Scaling relations for globular cluster systems in early-type galaxies
• UV Insights into the Complex Populations of M 87 Globular Clusters
• The Resolved Stellar Populations of a Dwarf Spheroidal Galaxy in the Virgo Cluster
• On the stellar content of the starburst galaxy IC10
• Multi-wavelength Analysis of the Merging Galaxy Cluster A115
• Star formation history of KDG 61 and KDG 64 from spectroscopy and colour-magnitude diagrams
• New Constraints on Additional Satellites of the Pluto System
• HALO7D I: The Line of Sight Velocities of Distant Main Sequence Stars in the Milky Way Halo
• The Tip of the Red Giant Branch Distances to Type Ia Supernova Host Galaxies. II. M66 and M96 in the Leo I Group
• IRAC Excess in Distant Star-Forming Galaxies: Tentative Evidence for the 3.3$\mu$m Polycyclic Aromatic Hydrocarbon Feature ?
• The globular cluster NGC 6642: Evidence for a depleted mass function in a very old cluster
• Early-type galaxies at large galactocentric radii - I. Stellar kinematics and photometric properties
• Modelling type IIP/IIL supernovae interacting with recent episodic mass ejections from their presupernova stars with MESA & SNEC
• New Insight into the stellar mass function of Galactic globular clusters
• The merger remnant NGC 3610 and its globular cluster system: a large-scale study
• Stellar Populations in Compact Galaxy Groups: a Multi-Wavelength Study of HCGs 16, 22, and 42, their Star Clusters and Dwarf Galaxies
• Hα photometry of low mass stars in 47 Tucanae: chromospheric activity and exotica
• Evolved Stars in the Core of the Massive Globular Cluster NGC 2419
• Soft Extragalactic X-Ray Binaries at the Eddington Threshold
• Ultra-Compact Dwarf Candidates Near the Lensing Galaxy in Abell S0740
• Characterization of optically-selected star forming knots in (U)LIRGs
• The ACS Nearby Galaxy Survey Treasury III: Cepheids in the Outer Disk of M81
• Ultra-Compact Dwarfs in the Fossil Group NGC 1132
• Mapping the Recent Star Formation History of the Disk of M51
• Observational Biases Masquerading as Cosmological Effects? A Cautionary Tale about Blue Tilts and Other Trends in Globular Cluster Systems
• Gemini Spectroscopy and HST Imaging of the Stellar Cluster Population in Region B of M82
• Optimal Integrated Abundances for Chemical Tagging of Extragalactic Globular Clusters
• Investigating the nuclear activity of barred spiral galaxies: the case of NGC 1672
• The outermost stellar halo of NGC 5128 (Centaurus A): Radial structure
• Globular cluster systems in fossil groups: NGC6482, NGC1132 and ESO306-017
• A peculiar faint satellite in the remote outer halo of M31
• The star formation history of the Sculptor Dwarf Irregular Galaxy
• On the absolute age of the metal-rich globular M71 (NGC 6838): I. optical photometry
• Photometric and Structural Parameters of Newly Discovered Nuclear Star Clusters in Local Volume Galaxies
• X-ray Binaries and Star Clusters in the Antennae: Optical Cluster Counterparts
• Panchromatic Hubble Andromeda Treasury. XIV. The Period-Age Relationship of Cepheid Variables in M31 Star Clusters
• Isolated dSph galaxy KKs3 in the local Hubble flow
• The Globular Cluster Populations of Giant Galaxies: Mosaic Imaging of Five Moderate-Luminosity Early-Type Galaxies
• Photometric determination of the mass accretion rates of pre-main sequence stars. VI. The case of LH 95 in the Large Magellanic Cloud
• Modelling optical emission of Ultra-luminous X-ray Sources accreting above the Eddington limit
• HST/ACS color-magnitude diagrams of candidate intermediate-age M 31 globular clusters. The role of blue horizontal branches
• The Early Chemical Enrichment Histories of Two Sculptor Group Dwarf Galaxies as Revealed by RR Lyrae Variables
• The Blue Straggler population in the globular cluster M53 (NGC5024): a combined HST, LBT, CFHT study
• SAO-6m Telescope Spectroscopic Observations of Globular Clusters in Nearby Galaxies
• A close look at the Centaurus A group of galaxies III. Recent star formation histories of late-type dwarfs around M83
• Vestige of the Star Cluster Burst in M51
• The Proper Motion of Pyxis: the first use of Adaptive Optics in tandem with HST on a faint halo object
• Effect of the initial mass function on the dynamical SMBH mass estimate in the nucleated early-type galaxy FCC 47
• Stellar Populations in the Outer Disk and Halo of the Spiral Galaxy M101
• Scaling relations for globular cluster systems in early-type galaxies. II. Is there an environmental dependence?
• On the determination of the He abundance distribution in globular clusters from the width of the main sequence
• On the progenitors of Local Group Novae - I. The M31 Catalog
• A molecular cloud within the light echo of V838 Monocerotis
• HST and VLT observations of the neutron star 1E 1207.4-5209
• The Star Cluster Population of the Spiral Galaxy NGC3370
• Effects of Alpha-Element Enhancement and the Thermally Pulsing-Asymptotic Giant Branch on Surface Brightness Fluctuation Magnitudes and Broadband Colors
• Star Cluster Formation and Destruction in the Merging Galaxy NGC 3256
• Serendipitous discovery of a faint dwarf galaxy near a Local Volume dwarf
• Toward a better understanding of supernova environments: a study of SNe 2004dg and 2012P in NGC 5806 with HST and MUSE
• Mid-Cycle Changes in Eta Carinae
• A newly discovered double-double candidate microquasar in NGC 300
• Data and 2D scaling relations for galaxies in Abell 1689: a hint of size evolution at z~0.2
• Star Cluster Candidates in M81
• Hubble Space Telescope Imaging of the Ultra-Compact High Velocity Cloud AGC 226067: A stripped remnant in the Virgo Cluster
• Characterizing dw1335-29, a recently discovered dwarf satellite of M83
• A state-of-the-art analysis of the dwarf irregular galaxy NGC 6822
• Blending of Cepheids in M33
• Age and structure parameters of a remote M31 globular cluster B514 based on HST, 2MASS, GALEX and BATC observations
• PHANGS-JWST First Results: A combined HST and JWST analysis of the nuclear star cluster in NGC 628
• Interstellar extinction and the distribution of stellar populations in the direction of the ultra-deep Chandra Galactic field
• The cosmic epoch dependence of environmental effects on size evolution of red-sequence early-type galaxies
• White dwarf atmosphere models with Ly-$\alpha$ opacity in the analysis of the white dwarf cooling sequence of NGC 6397
• Structural parameters for globular clusters in M31
• Stellar Populations in the Andromeda V Dwarf Spheroidal Galaxy
• Constraining the true nature of an exotic binary in the core of NGC 6624
• Peculiarities in the horizontal branch stars of globular cluster NGC 1851: Discovery of a Blue straggler companion to an EHB star
• The innermost globular clusters of M87
• A Globular Cluster Luminosity Function Distance to NGC 4993 Hosting a Binary Neutron Star Merger GW170817/GRB 170817A
• Distance and reddening of the Local Group dwarf irregular galaxy NGC 6822
• Mapping Circumstellar Matter with Polarized Light - The Case of Supernova 2014J in M82
• UVIT-HST-GAIA view of NGC 288: A census of hot stellar population and their properties from UV
• A deep Chandra survey for faint X-ray sources in the Galactic globular cluster M30, and searches for optical and radio counterparts
• The WAGGS project -- III. Discrepant mass-to-light ratios of Galactic globular clusters at high metallicity
• Imprints of Environment on Cluster and Field Late-type Galaxies at z~1
• The Nearby and Extremely Metal-Poor Galaxy CGCG 269-049
• Stellar Populations of Luminous Evolved Galaxies at z~1.5
• Extended Star Clusters in NGC 1023 from HST/ACS Mosaic Imaging
• Evidence of an interaction from resolved stellar populations: The curious case of NGC1313
• A Tale of Two Impostors: SN2002kg and SN1954J in NGC 2403
• The relation between surface star formation rate density and spiral arms in NGC 5236 (M83)
• The Gemini/HST Cluster Project: Structural and Photometric Properties of Galaxies in Three z =0.28-0.89 Clusters
• Extranuclear Halpha-emitting complexes in low-z (U)LIRGs: Precursors of tidal dwarf galaxies?
• Testing multi-mass dynamical models of star clusters with real data: mass segregation in three Galactic globular clusters
• All Puffed Up: Exploring Ultra-diffuse Galaxy Origins through Galaxy Interactions
• Next Generation Virgo Cluster Survey. XXI. The weak lensing masses of the CFHTLS and NGVS RedGOLD galaxy clusters and calibration of the optical richness
• VLT Optical BVR observations of two bright Supernova Ia hosts in the Virgo cluster
• UV-Bright Stellar Populations and Their Evolutionary Implications in the Collapsed-Core Cluster M15
• A High-Resolution Multiband Survey of Westerlund 2 With the Hubble Space Telescope. II. Mass accretion in the Pre-Main Sequence Population
• A Blue Straggler Binary System with at least Three Progenitors in the Core of a Globular Cluster?
• Discovery of a Transient X-ray Source in the Compact Stellar Nucleus of NGC 2403
• Reeling in the Whirlpool: the distance to M 51 clarified by Cepheids and the Type IIP SN 2005cs
• Deep multi-telescope photometry of NGC 5466. II. The radial behaviour of the mass function slope
• The Massive Star Population in M101. I. The Identification and Spatial Distribution of the Visually Luminous Stars
• Globular Cluster Systems of Relic Galaxies
• Globular Cluster Scale Sizes in Giant Galaxies: The Case of M87 and the Role of Orbital Anisotropy and Tidal Filling
• Searching for Multiple Populations in Ruprecht 106
• Simple Stellar Population Models as probed by the Large Magellanic Cloud Star Cluster ESO 121-SC03
• On the massive star content of the nearby dwarf irregular Wolf-Rayet galaxy IC 4662
• Revisiting Delta Y/Delta Z from multiple main sequences in Globular Clusters: insight from nearby stars
• Hubble Space Telescope study of resolved red giant stars in the outer halos of nearby dwarf starburst galaxies
• Ages of Star Clusters in the Tidal Tails of Merging Galaxies
• About the linearity of the color-magnitude relation of early-type galaxies in the Virgo cluster
• Binary Frequencies in a Sample of Globular Clusters. I. Methodology and Initial Results
• The merger history, AGN and dwarf galaxies of Hickson Compact Group 59
• Discovery of an Ultra-Faint Dwarf Galaxy in the Intracluster Field of the Virgo Center : A fossil of the First Galaxies?
• Massive stars in the Sagittarius Dwarf Irregular Galaxy
• Nuclei of dwarf spheroidal galaxies KKs3 and ESO269-66 and their counterparts in our Galaxy
• The First Extensive Exploration of UV-bright Stars in the Globular Cluster NGC 2808
• The Observational and Theoretical Tidal Radii of Globular Clusters in M87
• Light echo of V838 Monocerotis: properties of the echoing medium
• The Transient Ultra-luminous X-ray Source, ULX-4, in M51
• HST-ACS photometry of the isolated dwarf galaxy VV124=UGC4879. Detection of the Blue Horizontal Branch and identification of two young star clusters
• The second ULX transient in M31: Chandra, HST and XMM observations, and evidence for an extended corona
• Distances to Local Group Galaxies via Population II, Stellar Distance Indicators. II. The Fornax Dwarf Spheroidal
• HST and HSC Weak-lensing Study of the Equal-mass Dissociative Merger CIZA J0107.7+5408
• Keck Cosmic Web Imager (KCWI) Spectra of Globular Clusters and Ultra Compact Dwarfs in the Halo of M87
• A Multi-Wavelength Study of the Jet, Lobes and Core of the Quasar PKS 2101-490
• Multi-wavelength GOALS Observations of Star Formation and Active Galactic Nucleus Activity in the Luminous Infrared Galaxy IC 883
• A Note on Geometric Calibration of Multiple Cameras and Projectors
• Is NGC 300 a pure exponential disk galaxy?
• Identifications of Faint Chandra Sources in the Globular Cluster M3
• Two Populations of Old Star Clusters in the Spiral Galaxy M101 Based on HST/ACS Observations
• GHOSTS I: A New Faint very Isolated Dwarf Galaxy at D = 12 +/- 2 Mpc
• Major Substructure in the M31 Outer Halo: the East Cloud
• The colour-magnitude relations of ClJ1226.9+3332, a massive cluster of galaxies at z=0.89
• X-ray spectral and optical properties of a ULX in NGC 4258 (M106)
• Evidence for a Photoevaporated Circumbinary Disk in Orion
• Young Globular Clusters in an old S0: Clues to the Formation History of NGC 4570
• A New Diagnostic Method for Assessment of Stellar Stratification in Star Clusters
• The Void in the Sculptor Group Spiral Galaxy NGC 247
• A photometric analysis of Abell 1689: two-dimensional multi-structure decomposition, morphological classification, and the Fundamental Plane
• Andromeda IV, a solitary gas-rich dwarf galaxy
• The near-IR counterpart of IGR J17480-2446 in Terzan 5
• The young nuclear stellar disc in the SB0 galaxy NGC 1023
• The Disturbed and Globular Cluster-Rich Ultra-diffuse Galaxy UGC 9050-Dw1
• Variable Unidentified Emission Near 6307 AA in Eta Carinae
• Globular Cluster Candidates in NGC 891
• Pre-main sequence stars in the stellar association N11 in the Large Magellanic Cloud
• Detection of 125.5-day Optical Periodic Modulation of the Neutron Star M51 ULX-8
• The globular cluster system of NGC 1316. II - The extraordinary object SH2
• PSR B0656+14: the unified outlook from the infrared to X-rays
• Is the Cometary Nucleus Extraction Technique Reliable?
• A Comprehensive HST BVI Catalogue Of Star Clusters In Five Hickson Compact Groups Of Galaxies
• Two Optical Counterpart Candidates of M82-X1 from HST Observations
• Chandra and HST Studies of Six Millisecond Pulsars in the Globular Cluster M13
• Unveiling the nitrogen-rich massive star in the metal-poor galaxy NGC 4068
• Towards a data-driven model of the sky from low Earth orbit as observed by the Hubble Space Telescope
• Mapping the Spatial Distribution of Dust Extinction in NGC 959 Using Broadband Visible and mid-IR Filters
• Gemini Spectra of Star Clusters in the Spiral Galaxy M101
• Many new variable stars discovered in the core of the globular cluster NGC 6715 (M54) with EMCCD observations
• Normal Globular Cluster Systems in Massive Low Surface Brightness Galaxies
• Hubble Space Telescope Observations of Comet 9P/Tempel 1 during the Deep Impact Encounter
• Investigation of the Connection Between X-ray Binaries and Compact Star Clusters in NGC 628
• AstroSat study of the globular cluster NGC 2298: probable evolutionary scenarios of hot HB stars
• Search for multiwavelength emission from the binary millisecond pulsar PSR J1836-2354A in the globular cluster M22
• The massive star population of the Virgo Cluster galaxy NGC 4535
• New $ubvri$ photometry of 234 M33 star clusters
• Modelling of integrated-light spectra from the optical to the near-infrared: the globular cluster G280 in M31
• Discovery, photometry, and astrometry of 49 classical nova candidates in M81 galaxy
• Intermediate Old Star Clusters in a Young Starburst: The case of NGC 5253
• M31 globular cluster structures and the presence of X-ray binaries
• The Bottom-Light Present Day Mass Function of the Peculiar Globular Cluster NGC 6535
• A New Metal-poor Globular Cluster and Resolved Stars in the Outer Disk of the Black Eye Galaxy M64: Implication for the Origin of the Type III Disk Break
• How the extinction of extragalactic background light affects surface photometry of galaxies, groups and clusters
• X-ray properties of two transient ULX candidates in galaxy NGC 7090
• Resolved SPLASH Chemodynamics in Andromeda's PHAT Stellar Halo and Disk: On the Nature of the Inner Halo Along the Major Axis
• Structural analysis of disk super star clusters of M82: size and profile shape at intermediate ages
• A Calibration of NICMOS Camera 2 for Low Count-Rates
• Discovery of two eclipsing X-ray binaries in M51
• Evidence for Three Subpopulations of Globular Clusters in the Early-Type Post-Starburst Shell Galaxy AM 0139-655
• The Next Generation Virgo Cluster Survey. XXVIII. Characterization of the Galactic White Dwarf Population
• Type IIP Supernova Progenitors II: Stellar Mass and Obscuration by the Dust in the Circumstellar Medium
• Star Clusters in the Elliptical Galaxy NGC 4589 Hosting a Calcium-rich SN Ib (SN 2005CZ)
• A Glimpse into the Past: The Recent Evolution of Globular Clusters
• On the HI-Hole and AGB Stellar Population of the Sagittarius Dwarf Irregular Galaxy
• Population gradients and photometric metallicities in early- and transition-type dwarf galaxies: Clues from the Sculptor group
• The population of single and binary white dwarfs of the Galactic bulge
• A nearby isolated dwarf: star formation and structure of ESO 006-001
• The dynamical state of the globular clusters Rup 106 and IC 4499
• Edge-on galaxies in the Hubble Ultra Deep Field
• EROs found behind lensing clusters. II. Stellar populations and dust properties of optical dropout EROs and comparison with related objects
• Recent stellar mass assembly of low-mass star-forming galaxies at redshifts 0.3 < z < 0.9
• A study of globular clusters in a lenticular galaxy in Hydra I from deep HST/ACS photometry
• Distance and Reddening of the Isolated Dwarf Irregular Galaxy NGC 1156
• Globular Cluster Populations in Four Early-Type Poststarburst Galaxies
• Structural Parameters for 10 Halo Globular Clusters in M33
• Search for LBVs in the Local Volume galaxies: study of four stars in NGC 4449
• Simulation of a strategy for the pixel lensing of M87 using the Hubble Space Telescope
• Are the red halos of galaxies made of low-mass stars? Constraints from subdwarf star counts in the Milky Way halo
• Quasars Have Fewer Close Companions than Normal Galaxies
• GRB 190114C in the nuclear region of an interacting galaxy -- A detailed host analysis using ALMA, HST and VLT
• The ACS survey of globular clusters. XIII. Photometric calibration in comparison with Stetson standards
• Resolved photometry of Young Massive Clusters in the starburst galaxy NGC 4214
• A Differential RR Lyrae Line-of-Sight Distance Between M31 and M33
• Searching for exotic object companions in the dense core of NGC 362: a multi-wavelength and multi-epoch photometric analysis
• Identification of a New Ultraluminous X-ray Source in NGC 1316
• Dust and gas in the central region of NGC 1316 (Fornax A) -- Its origin and nature
• Evidence for the Evolution of Young Early-Type Galaxies in the GOODS/CDF-S Field
• The Complete Spitzer Survey of Stellar Structure in Galaxies (CS${}^4$G)
• Is the young star cluster NGC 376 dissolving in the field of the SMC?
• YOLO-CL cluster detection in the Rubin/LSST DC2 simulation
• Detailed study of B037 based on {\sl HST} images
• Photometric Catalogue for Space and Ground Night-Time Remote-Sensing Calibration: RGB Synthetic Photometry from Gaia DR3 Spectrophotometry
• Andromeda XXXV: The Faintest Dwarf Satellite of the Andromeda Galaxy
• Structural Parameters for Globular Clusters in the Outer Halo of M31
• Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud: III. Horizontal Branch Morphology
• Assessment of Stellar Stratification in Three Young Star Clusters in the Large Magellanic Cloud
• A second neutron star in M4?
• Dwarf galaxies in the MATLAS Survey: Hubble Space Telescope observations of nuclear star clusters
• The Ancient Globular Clusters of NGC 1291
• Multiwavelength search for counterparts of supersoft X-ray sources in M31
• White Light Flare Continuum Observations with ULTRACAM
• The Gemini/HST Galaxy Cluster Project: Environment Effects on the Stellar Populations in the Lynx Clusters at z=1.27
• Identification and characterization of optical companions to the population of millisecond pulsars in the globular cluster M3
• Globular cluster population of the HST frontier fields galaxy J07173724+3744224
• Hubble Space Telescope Imaging of Luminous Extragalactic Infrared Transients and Variables from the SPIRITS Survey
• The Onset of Convective Coupling and Freezing in the White Dwarfs of 47 Tucanae
• The mass profile of NGC 3377 from a Bayesian approach
• Testing QUMOND theory with Galactic globular clusters in a weak external field
• The fate of the progenitors of luminous red novae: Infrared detection of LRNe years after the outburst
• Evidence for Environmental Stripping in the Coma Cluster
• Study of dynamical status of the globular cluster NGC 1851 using Ultraviolet Imaging Telescope
• Structural parameters and possible association of the Ultra-Faint Dwarfs Pegasus III and Pisces II from deep Hubble Space Telescope photometry
• A detailed star formation history of the distant Milky Way satellite Canes Venatici I: An old dwarf spheroidal forming most of its stars after reionisation
• The evolution of star clusters: The resolved-star approach
• Exploring the crowded central region of 10 Galactic globular clusters using EMCCDs. Variable star searches and new discoveries
• The ACS LCID Project: data reduction strategy
• Chandra, XMM-Newton and HST observations of a transient in M31 with a possible asymmetric, precessing disk
• XClass: An Automated Multiwavelength Machine-Learning Pipeline for Classification of Extragalactic X-ray Sources. I. Pipeline Description
• Surface photometry of 50 dwarf galaxies in the Local Volume
• Discovery and Detailed Study of the M31 Classical Nova AT 2023tkw: Evidence for Internal Shocks
• Willman 1 Revisited: The Kinematics, Chemistry, and Orbital Properties of a Potentially-Disrupting Dwarf Galaxy