A large stellar evolution database for population synthesis studies. II. Stellar models and isochrones for an alpha-enhanced metal distribution

Abstract

[Abridged] We present a large, new set of stellar evolution models and isochrones for an alpha-enhanced metal distribution typical of Galactic halo and bulge stars; it represents a homogeneous extension of our stellar model library for a distribution already presented in Pietrinferni et al.(2004). The effect of the alpha-element enhancement has been properly taken into account in the nuclear network, opacity, equation of state and, for the first time, the bolometric corrections, and color transformations. This allows us to avoid the inconsistent use - common to all alpha-enhanced model libraries currently available - of scaled-solar bolometric corrections and color transformations for alpha-enhanced models and isochrones. We show how bolometric corrections to magnitudes obtained for the U,B portion of stellar spectra for T_{eff}<=6500K, are significantly affected by the metal mixture, especially at the higher metallicities. We also provide complete sets of evolutionary models for low-mass, He-burning stellar structures covering the whole metallicity range, to enable synthetic horizontal branch simulations. We compare our database with several widely used stellar model libraries from different authors, as well as with various observed color magnitude and color-color diagrams (Johnson-Cousins BVI and near infrared magnitudes, Stromgren colors) of Galactic field stars and globular clusters. We also test our isochrones comparing integrated optical colors and Surface Brightness Fluctuation magnitudes with selected globular cluster data. We find a general satisfactory agreement with the empirical constraints.

46 pages, 20 figures, ApJ in press, the whole database presented in this paper can be foud at http://www.te.astro.it/BASTI/index.php

References in corpus (8)

• A large stellar evolution database for population synthesis studies. I. Scaled solar models and isochrones
• Galactic Globular Cluster Relative Ages. II
• Transforming observational data and theoretical isochrones into the ACS/WFC Vega-mag system
• Color transformations and bolometric corrections for Galactic halo stars: alpha-enhanced vs scaled-solar results
• The Initial Helium Abundance of the Galactic Globular Cluster System
• A Homogenous Set of Globular Cluster Relative Distances and Reddenings
• Near-Infrared photometry of four metal-rich Bulge globular clusters: NGC6304, NGC6569, NGC6637, NGC6638
• Near-Infrared Observations of RR Lyrae variables in Galactic Globular Clusters: I. The case of M92

Cited by in corpus (479)

• The Dartmouth Stellar Evolution Database
• New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey
• A Triple Main Sequence in the Globular Cluster NGC 2808
• Reddening and Extinction Toward the Galactic Bulge from OGLE-III: The Inner Milky Way's Rv ~ 2.5 Extinction Curve
• SkyMapper and the Southern Sky Survey
• UV-extended E-MILES stellar population models: young components in massive early-type galaxies
• The Ages of 55 Globular Clusters as Determined Using an Improved delta V_TO^HB Method Along with Color-Magnitude Diagram Constraints, and Their Implications for Broader Issues
• Gaia broad band photometry
• The ACS Survey of Galactic Globular Clusters. IX. Horizontal Branch Morphology and the Second Parameter Phenomenon
• On the use of empirical bolometric corrections for stars
• Scaled solar tracks and isochrones in a large region of the Z-Y plane I. From the ZAMS to the TP-AGB end for 0.15 - 2.5 Mo stars
• Evolutionary stellar population synthesis with MILES - II. Scaled-solar and α-enhanced models
• The Updated BaSTI Stellar Evolution Models and Isochrones: I. Solar Scaled Calculations
• Two Red Clumps and the X-Shaped Milky Way Bulge
• The ACS Survey of Galactic Globular Clusters. II. Stellar Evolution Tracks, Isochrones, Luminosity Functions, and Synthetic Horizontal-Branch Models
• Galactic Rotation and Solar Motion from Stellar Kinematics
• What is a globular cluster? An observational perspective
• The birth of the Milky Way as uncovered by accurate stellar ages with Gaia
• Multiple stellar populations in 47 Tucanae
• Direct Detection of the Close Companion of Polaris with the Hubble Space Telescope
• The APOGEE red-clump catalog: Precise distances, velocities, and high-resolution elemental abundances over a large area of the Milky Way's disk
• New Limits on an Intermediate Mass Black Hole in Omega Centauri: I. Hubble Space Telescope Photometry and Proper Motions
• Toward a Better Understanding of Cosmic Chronometers: A new measurement of H(z) at z~0.7
• Scaled solar tracks and isochrones in a large region of the Z-Y plane. II. From 2.5 to 20 solar masses
• N-body modeling of globular clusters: Masses, mass-to-light ratios and intermediate-mass black holes
• On a new theoretical framework for RR Lyrae stars I: the metallicity dependence
• The multiplicity of the subgiant branch of Omega Centauri: Evidence for prolonged star formation
• Photometric signatures of multiple stellar populations in Galactic globular clusters
• The updated BaSTI stellar evolution models and isochrones: II. alpha-enhanced calculations
• The age-metallicity structure of the Milky Way disk
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. III. A quintuple stellar population in NGC2808
• The Star Formation & Chemical Evolution History of the Fornax Dwarf Spheroidal Galaxy
• The stellar IMF determined in early-type galaxies from a non-degenerate set of optical line indices
• Spectral models for solar-scaled and alpha-enhanced stellar populations
• The Star Formation & Chemical Evolution History of the Sculptor Dwarf Spheroidal Galaxy
• The Case for the Dual Halo of the Milky Way
• The double Subgiant Branch of NGC 1851: the role of the CNO abundance
• Globular cluster formation in the context of galaxy formation and evolution
• Multiple stellar populations in Magellanic Clouds clusters. I. An ordinary feature for intermediate age globulars in the LMC?
• Helium enhanced stars and multiple populations along the horizontal branch of NGC2808: direct spectroscopic measurements
• Measuring the vertical age structure of the Galactic disc using asteroseismology and SAGA
• A large stellar evolution database for population synthesis studies. V. Stellar models and isochrones with CNONa abundance anticorrelations
• Stellar Models with Enhanced Abundances of C, N, O, Ne, Na, Mg, Si, S, Ca, and Ti, in Turn, at Constant Helium and Iron Abundances
• A Large Stellar Evolution Database for Population Synthesis Studies. III. Inclusion of the full Asymptotic Giant Branch phase and Web tools for stellar population analyses
• Homogeneous studies of transiting extrasolar planets. II. Physical properties
• A large stellar evolution database for population synthesis studies: VI. White dwarf cooling sequences
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. II. The seven stellar populations of NGC7089 (M2)
• A comparison of evolutionary tracks for single Galactic massive stars
• High-Resolution Spectroscopic Study of Extremely Metal-Poor Star Candidates from the SkyMapper Survey
• Time Inference with MUSE in Extragalactic Rings (TIMER): Properties of the Survey and High-Level Data Products
• Elemental Abundances and their Implications for the Chemical Enrichment of the Boötes~I Ultra-Faint Galaxy
• On the metallicity gradient of the Galactic disk
• MUSE crowded field 3D spectroscopy of over 12,000 stars in the globular cluster NGC 6397 - I. The first comprehensive spectroscopic HRD of a globular cluster
• The Pisa Stellar Evolution Data Base for low-mass stars
• The Peculiar Horizontal Branch Morphology of the Galactic Globular Clusters NGC 6388 and NGC 6441: new insights from UV observations
• The velocity dispersion profile of NGC 6388 from resolved-star spectroscopy: no evidence of a central cusp and new constraints on the black hole mass
• The End of the White Dwarf Cooling Sequence in M4: an efficient approach
• The C+N+O abundance of Omega Centauri giant stars: implications on the chemical enrichment scenario and the relative ages of different stellar populations
• A large stellar evolution database for population synthesis studies. IV. Integrated properties and spectra
• The galaxy-wide IMF of dwarf late-type to massive early-type galaxies
• The peculiar Horizontal Branch of NGC 2808
• On the distance of the globular cluster M4 (NGC 6121) using RR Lyrae stars: I. optical and near-infrared Period-Luminosity and Period-Wesenheit relations
• Ceci n'est pas a globular cluster: the metallicity distribution of the stellar system Terzan 5
• Stellar Population Models and Individual Element Abundances I: Sensitivity of Stellar Evolution Models
• The Tip of the Red Giant Branch Distances to Type Ia Supernova Host Galaxies. IV. Color Dependence and Zero-Point Calibration
• VLT/FLAMES spectroscopy of red giant branch stars in the Fornax dwarf spheroidal galaxy
• Isochrones for Old (> 5 Gyr) Stars and Stellar Populations. I. Models for $-2.4\le$ [Fe/H] $\le +0.6$, $0.25\le Y\le 0.33$, and $-0.4\le$ [$\alpha$\Fe] $\le +0.4$
• The GIST Pipeline: A Multi-Purpose Tool for the Analysis and Visualisation of (Integral-field) Spectroscopic Data
• Lithium abundance in the globular cluster M4: from the Turn-Off to the RGB Bump
• On the alleged duality of the Galactic halo
• GALA: an automatic tool for the abundance analysis of stellar spectra
• The First Empirical Mass Loss Law for Population II Giants
• Timing the formation and assembly of early-type galaxies via spatially resolved stellar populations analysis
• Uncertainties on near-core mixing in red-clump stars: effects on the period spacing and on the luminosity of the AGB bump
• The Chemical Compositions of Variable Field Horizontal Branch Stars: RR Lyrae Stars
• Hubble Space Telescope Observations of an Outer Field in Omega Centauri: A Definitive Helium Abundance
• Giants in the globular cluster omega Centauri: dust production, mass loss and distance
• VLT/FLAMES spectroscopy of Red Giant Branch stars in the Carina dwarf spheroidal galaxy
• The Horizontal Branch in the UV Colour Magnitude Diagrams. II. The case of M3, M13 and M79
• Globular Cluster Abundances from High-Resolution Integrated Light Spectra, I: 47 Tuc
• Population Parameters of Intermediate-Age Star Clusters in the Large Magellanic Cloud. I. NGC 1846 and its Wide Main Sequence Turnoff
• The metallicity spread and the age-metallicity relation of Omega Centauri
• Population Parameters of Intermediate-Age Star Clusters in the Large Magellanic Cloud. II. New Insights from Extended Main Sequence Turnoffs in 7 Star Clusters
• Period-luminosity relations in evolved red giants explained by solar-like oscillations
• Multiple stellar populations in Magellanic Cloud clusters. III. The first evidence of an extended main sequence turn-off in a young cluster: NGC1856
• Multiple stellar populations in Magellanic Cloud clusters. IV. The double main sequence of the young cluster NGC1755
• Fourier analysis of non-Blazhko ab-type RR Lyrae stars observed with the Kepler space telescope
• The Terzan 5 puzzle: discovery of a third, metal-poor component
• Detailed abundances for M giants in two inner bulge fields from Infrared Spectroscopy
• M31 Globular Cluster Abundances from High-Resolution, Integrated-Light Spectroscopy
• The inside-out formation of nuclear discs and the absence of old central spheroids in barred galaxies of the TIMER survey
• The BaSTI Stellar Evolution Database: models for extremely metal-poor and super-metal-rich stellar populations
• X-shooter observations of main sequence stars in the globular cluster NGC 2808: first chemical tagging of a He-normal and a He-rich dwarf
• Spitzer spectroscopy of carbon stars in the Small Magellanic Cloud
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters - XV. The dynamical clock: reading cluster dynamical evolution from the segregation level of blue straggler stars
• Post first dredge-up [C/N] ratio as age indicator. Theoretical calibration
• IMF and [Na/Fe] abundance ratios from optical and NIR Spectral Features in Early-type Galaxies
• The Dependence of Theoretical Synthetic Spectra on $\alpha$-enhancement in Young, Binary Stellar Populations
• The fraction of binary systems in the core of five Galactic open clusters
• The structural and dynamical properties of compact elliptical galaxies
• The RR Lyrae variables and Horizontal Branch of NGC6656 (M22)
• New PARSEC database of alpha-enhanced stellar evolutionary tracks and isochrones I. Calibration with 47 Tuc (NGC104) and the improvement on RGB bump
• HAT-P-4b: A metal-rich low-density transiting hot Jupiter
• Blue large-amplitude pulsators as a new class of variable stars
• A pulsational distance to Omega Centauri based on Near-Infrared Period-Luminosity relations of RR Lyrae stars
• The Clusters AgeS Experiment (CASE). IV. Analysis of the Eclipsing Binary V69 in the Globular Cluster 47 Tuc
• Star formation history of the Galactic bulge from deep HST imaging of low reddening windows
• Improved Dynamical Masses for Six Brown Dwarf Companions Using Hipparcos and Gaia EDR3
• Near-Infrared Photometry of Globular Clusters Towards the Galactic Bulge: Observations and Photometric Metallicity Indicators
• The spatially-resolved star formation histories of CALIFA galaxies: Implications for galaxy formation
• Stroemgren photometry of Galactic Globular Clusters. I. New Calibrations of the metallicity index
• How old are the stars in the halo of NGC 5128 (Centaurus A)?
• The infrared eye of the Wide-Field Camera 3 on the Hubble Space Telescope reveals multiple main sequences of very low-mass stars in NGC 2808
• The Na-O anticorrelation in horizontal branch stars. I. NGC 2808
• Old Main Sequence Turnoff Photometry in the Small Magellanic Cloud. II. Star Formation History and Its Spatial Gradients
• Cumulative physical uncertainty in modern stellar models I. The case of low-mass stars
• Stellar Ages through the Corners of the Boxy Bulge
• A chemical trompe-l'œil: no iron spread in the globular cluster M22
• The age of the Milky Way inner stellar spheroid from RR Lyrae population synthesis
• The Gaia-ESO Survey: calibration strategy
• The Gaia-ESO survey: Calibrating a relationship between Age and the [C/N] abundance ratio with open clusters
• On the evolutionary and pulsation mass of Classical Cepheids: III. the case of the eclipsing binary Cepheid CEP0227 in the Large Magellanic Cloud
• Characterising stellar halo populations I: An extended distribution function for halo K giants
• On the RR Lyrae stars in globulars: IV. $\omega$ Centauri Optical UBVRI Photometry
• On a new theoretical framework for RR Lyrae stars II: Mid--Infrared Period--Luminosity--Metallicity Relations
• Element abundances in the stars of the MILES spectral library: the Mg/Fe ratio
• Stellar Archaeology in the Galactic halo with the Ultra-Faint Dwarfs: VI. Ursa Major II
• Fundamental stellar parameters and metallicities from Bayesian spectroscopy. Application to low- and high-resolution spectra
• Diversity of nuclear star cluster formation mechanisms revealed by their star formation histories
• MCAO near-IR photometry of the Globular Cluster NGC 6388: MAD observations in crowded fields
• The Fornax 3D project: a two-dimensional view of the stellar initial mass function in the massive lenticular galaxy FCC 167
• The Na-O anticorrelation in horizontal branch stars. II. NGC1851
• The Search for Multiple Populations in Magellanic Cloud Clusters I: Two Stellar Populations in the Small Magellanic Cloud Globular Cluster NGC 121
• Stellar Archaeology in the Galactic halo with Ultra-Faint Dwarfs: VII. Hercules
• Complex AGN feedback in the Teacup galaxy. A powerful ionised galactic outflow, jet-ISM interaction, and evidence for AGN-triggered star formation in a giant bubble
• Chemical and kinematical properties of BSSs and HB stars in NGC 6397
• The Detailed Chemical Properties of M31 Star Clusters I. Fe, Alpha and Light Elements
• The Chemical Compositions of Non-Variable Red and Blue Field Horizontal Branch Stars
• The M4 Core Project with HST -- II. Multiple Stellar Populations at the Bottom of the Main Sequence
• Helium in first and second-generation stars in Globular Clusters from spectroscopy of red giants
• The massive relic galaxy NGC 1277 is dark matter deficient. From dynamical models of integral-field stellar kinematics out to five effective radii
• Stromgren photometry of Galactic Globular Clusters. II Metallicity distribution of red giants in Omega Centauri
• The Aarhus Red Giants Challenge I: Stellar structures in the red giant branch phase
• Uncertainties in grid-based estimates of stellar mass and radius. SCEPtER: Stellar CharactEristics Pisa Estimation gRid
• A Deep View of a Fossil Relic in the Galactic Bulge: The Globular Cluster HP1
• Period-luminosity relations of type II Cepheids in the Magellanic Clouds
• A Young Cluster With an Extended Main Sequence Turnoff: Confirmation of a Prediction of the Stellar Rotation Scenario
• Metal-poor nuclear star clusters in two dwarf galaxies near Centaurus A suggesting formation from the in-spiraling of globular clusters
• Photometric properties of stellar populations in Galactic globular clusters: the role of the Mg-Al anticorrelation
• Modelling simple stellar populations in the near-ultraviolet to near-infrared with the X-shooter Spectral Library (XSL)
• RR Lyrae stars in Galactic globular clusters. VI. The Period-Amplitude relation
• Giants reveal what dwarfs conceal: Li abundance in lower RGB stars as diagnostic of the primordial Li
• The origin of the spurious iron spread in the globular cluster NGC 3201
• Grids of stellar models with rotation VII: Models from 0.8 to 300 M${}_{\odot }$ at super-solar metallicity (Z = 0.020)
• The surprising external upturn of the Blue Straggler radial distribution in M55
• Discovery of period doubling in BL Herculis stars of the OGLE survey. Observations and theoretical models
• Stacking the Invisibles: A Guided Search for Low-Luminosity Milky Way Satellites
• New insights on the Galactic Bulge Initial Mass Function
• Star Counts in the Globular Cluster Omega Centauri. I. Bright Stellar Components
• A Young Stellar Cluster Surrounding the Peculiar Eruptive Variable V838 Monocerotis
• The Populations of Carina. II. Chemical Enrichment
• Galaxy properties as revealed by MaNGA. I. Constraints on Initial Mass Function and M${}_{\ast }$/L gradients in ellipticals
• Period-Luminosity Relations for Type II Cepheids and their Application
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters - XII. The RGB Bumps of multiple stellar populations
• Ages of the Bulge globular clusters NGC 6522 and NGC 6626 (M28) from HST Proper-motion-cleaned Color-Magnitude Diagrams
• The evolution of the binary population in globular clusters: a full analytical computation
• A Chemical Composition Survey of the Iron-Complex Globular Cluster NGC 6273 (M 19)
• Deep Gemini/GMOS imaging of an extremely isolated globular cluster in the Local Group
• On the Delta V_HB_bump parameter in Globular Clusters
• Tracing the outer halo in a giant elliptical to 25 Reff
• Constraining Globular Cluster Age Uncertainties Using the IR Color-Magnitude Diagram
• Characterizing stellar halo populations II: The age gradient in blue horizontal-branch stars
• C and N abundances of MS and SGB stars in NGC 1851
• Star formation history and metallicity in the Galactic inner bulge revealed by the red giant branch bump
• The Peculiar Radial Distribution of Multiple Populations in the massive globular cluster M80
• On the magnitude difference between the main sequence turn off and the red giant branch bump in Galactic globular clusters
• The chemical composition of the low-mass Galactic globular cluster NGC 6362
• Stellar models with the ML2 theory of convection
• Towards precise ages for single stars in the field. Gyrochronology constraints at several Gyr using wide binaries. I. Ages for initial sample
• The UK Infrared Telescope M33 monitoring project. V. The star formation history across the galactic disc
• The Magellan PFS Planet Search Program: Radial Velocity and Stellar Abundance Analyses of the 360 AU, Metal-Poor Binary "Twins" HD 133131A & B
• Survey of non-linear hydrodynamic models of type-II Cepheids
• The bursty star formation history of the Fornax dwarf spheroidal galaxy revealed with the HST
• Mapping the stellar age of the Milky Way bulge with the VVV. I. The method
• The Horizontal Branch of NGC 1851: Constraints on the Cluster Subpopulations
• Nitrogen depletion in field red giants: mixing during the He flash?
• On the red giant branch mass loss in 47 Tucanae: Constraints from the horizontal branch morphology
• On the remote Galactic globular cluster NGC 2419
• Anomalous Double-Mode RR Lyrae Stars in the Magellanic Clouds
• Globular Cluster Abundances from High-Resolution, Integrated-Light Spectroscopy. III. The Large Magellanic Cloud: Fe and Ages
• Synthetic properties of bright metal-poor variables. II. BL Her stars
• Does SEGUE/SDSS indicate a dual Galactic halo?
• A method to estimate stellar ages from kinematical data
• Spectroscopic analysis of the two subgiant branches of the globular cluster NGC1851
• Variable stars in the Globular Cluster NGC 2808
• Hot Horizontal Branch stars in omega Centauri: clues about their origin from the cluster Color Magnitude Diagram
• Stellar populations across galaxy bars in the MUSE TIMER project
• Chronology of our Galaxy from Gaia Colour-Magnitude Diagram-fitting (ChronoGal). I. The formation and evolution of the thin disk from the Gaia Catalogue of Nearby Stars
• Convective boundary mixing in main-sequence stars: theory and empirical constraints
• Constraining nuclear star cluster formation using MUSE-AO observations of the early-type galaxy FCC47
• The star formation history of Eridanus II: on the role of SNe feedback in the quenching of ultra-faint dwarf galaxies
• On the Impact of Helium Content on the RR Lyrae Distance Scale
• Fast rotating Blue Stragglers in the globular cluster M4
• Multiple stellar populations in the globular cluster M3 (NGC 5272): a Strömgren perspective
• Cyclic variations in O-C diagrams of field RR Lyrae stars as a result of LiTE
• The ISLAnds Project III: Variable Stars in Six Andromeda Dwarf Spheroidal Galaxies
• A study of rotating globular clusters - the case of the old, metal-poor globular cluster NGC 4372
• The subgiant branch of omega Cen seen through high-resolution spectroscopy. I. The first stellar generation in omega Centauri?
• A Double White-Dwarf Cooling Sequence in ω Centauri
• Measuring Infrared Surface Brightness Fluctuation Distances with HST WFC3: Calibration and Advice
• An empirical mass-loss law for Population II giants from the Spitzer-IRAC survey of Galactic globular clusters
• Uniform Forward-Modeling Analysis of Ultracool Dwarfs. I. Methodology and Benchmarking
• ACS photometry of the globular cluster B514
• NGC6362: the least massive globular cluster with chemically distinct multiple populations
• Multiple stellar populations in Magellanic Cloud clusters. II. Evidence also in the young NGC1844?
• Radial gradients in initial mass function sensitive absorption features in the Coma brightest cluster galaxies
• The Carina Project. VIII. The α-element abundances
• Normal A0--A1 stars with low rotational velocities. I. Abundance determination and classification
• Nuclear star cluster formation in star-forming dwarf galaxies
• SPInS, a pipeline for massive stellar parameter inference: A public Python tool to age-date, weigh, size up stars, and more
• Inverse stellar population age gradients of post-starburst galaxies at z=0.8 with LEGA-C
• Time-Series Photometry of Globular Clusters: M62 (NGC 6266), the Most RR Lyrae-Rich Globular Cluster in the Galaxy?
• On the missing second generation AGB stars in NGC6752
• Photometric Oscillations of Low Luminosity Red Giant Stars
• First Detection of the White-Dwarf Cooling Sequence of the Galactic Bulge
• Globular Cluster Abundances from High-Resolution, Integrated-Light Spectroscopy. II. Expanding the Metallicity Range for Old Clusters and Updated Analysis Techniques
• Self-consistent analysis of stellar clusters: An application to HST data of the halo globular cluster NGC 6752
• A Re-Evaluation of the Evolved Stars in the Globular Cluster M13
• Spectroscopic detection of multiple populations in the ~2 Gyr old cluster Hodge 6 in the LMC
• On a new method to estimate distance, reddening and metallicity of RR Lyrae stars using optical/near-infrared ($B$,$V$,$I$,$J$,$H$,$K$) mean magnitudes: $\omega$ Centauri as a first test case
• The Controversial Star-Formation History and Helium Enrichment of the Milky Way Bulge
• The photometric evolution of dissolving star clusters: II. Realistic models. Colours and M/L ratios
• Digging for relics of the past: the ancient and obscured bulge globular cluster NGC6256
• Gravitational Potential and Surface Density Drive Stellar Populations -- II. Star-Forming Galaxies
• PSR J1641+3627F: a low-mass He white dwarf orbiting a possible high-mass neutron star in the globular cluster M13
• $uvby-H_{\beta }$ CCD photometry and membership segregation of the open cluster NGC2682 (M67)
• Evolutionary and pulsation properties of Type II Cepheids
• Modeling the chemical evolution of Omega Centauri using three-dimensional hydrodynamical simulations
• The Carina Project. V. The impact of NLTE effects on the iron content
• Globular clusters of NGC 3115 in the near-infrared. Demonstrating the correctness of two opposing scenarios
• Beat Cepheids as Probes of Stellar and Galactic Metallicity
• 3D core kinematics of NGC 6362: central rotation in a dynamically evolved globular cluster
• On the relation between metallicity and RGB color in HST/ACS data
• On the period distribution of cluster RR Lyrae stars to constrain their helium content: the case of omega Centauri
• A new method for age-dating the formation of bars in disc galaxies: The TIMER view on NGC1433's old bar and the inside-out growth of its nuclear disc
• SHOTGLAS I: The ultimate spectroscopic census of extreme horizontal branch stars in $\omega$ Centauri
• Spectroscopy of horizontal branch stars in Omega Centauri
• The helium abundance in the metal-poor globular clusters M30 and NGC6397
• Radial variation of the stellar mass functions in the globular clusters M15 and M30: clues of a non-standard IMF?
• sMILES SSPs: A Library of Semi-Empirical MILES Stellar Population Models with Variable [$\alpha$/Fe] Abundances
• The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XX. Ages of single and multiple stellar populations in seven bulge globular clusters
• Multiple populations in massive star clusters under the magnifying glass of photometry: Theory and tools
• Modelling realistic horizontal branch morphologies and their impact on spectroscopic ages of unresolved stellar systems
• New clues on the nature of the companion to PSR~J1740-5340 in NGC6397 from XSHOOTER spectroscopy
• An extremely metal-deficient globular cluster in the Andromeda Galaxy
• A population of binaries in the Asymptotic Giant Branch of 47 Tucanae?
• The iron dispersion of the globular cluster M 2, revised
• Rotational signature of the Milky Way stellar halo
• Calibrating convective-core overshooting with eclipsing binary systems. The case of low-mass main-sequence stars
• Optical and near infra-red colours as a discriminant of the age and metallicity of stellar populations
• Stellar lifetime and ultraviolet properties of the old metal-rich Galactic open cluster NGC6791: a pathway to understand the UV upturn of elliptical galaxies
• Acoustic oscillations in stars near the tip of the red giant branch
• The horizontal branch luminosity vs metallicity in M31 globular clusters
• Lithium spectral line formation in stellar atmospheres. The impact of convection and NLTE effects
• On the separation between RR Lyrae and Type II Cepheids and their importance for distance determination: the case of $\omega$ Cen
• A wide-area view of the Phoenix dwarf galaxy from VLT/FORS imaging
• Monte Carlo simulations of multiple populations in globular clusters: constraints on the cooling flow vs. accretion scenario using million bodies simulations
• The chemical composition of NGC5824, a globular cluster without iron spread but with an extreme Mg-Al anticorrelation
• Phase-space Properties and Chemistry of the Sagittarius Stellar Stream Down to the Extremely Metal-poor ($[Fe/H]\lesssim -3$) Regime
• A Helium-Carbon Correlation on the Extreme Horizontal Branch in $\omega$ Centauri
• The cosmological Lithium problem outside the Galaxy: the Sagittarius globular cluster M54
• Hubble Space Telescope analysis of stellar populations within the globular cluster G1 (Mayall II) in M31
• A census of new globular clusters in the Galactic bulge
• The SAMI galaxy survey: galaxy size can explain the offset between star-forming and passive galaxies in the mass-metallicity relationship
• Binary stars and the UVX in early type galaxies
• Chemical Inhomogeneities Amongst First Population Stars in Globular Clusters: Evidence for He variations
• A metal-poor ultra compact dwarf galaxy at a kiloparsec distance from the low-mass elliptical galaxy FCC47
• Do the stellar populations of the brightest two group galaxies depend on the magnitude gap?
• How well can we determine ages and chemical abundances from spectral fitting of integrated light spectra?
• The Horizontal Branch of the Sculptor Dwarf galaxy
• Chemically-dissected rotation curves of the Galactic Bulge from Main Sequence proper motions
• The effect of rotation on the spectrum of Vega
• Confirmation of a metallicity spread amongst first population stars in globular clusters
• The HST/ACS star formation history of the Tucana dwarf spheroidal galaxy: clues from the horizontal branch
• The dark side of galaxy stellar populations I: The stellar-to-halo mass relation and the velocity dispersion - halo mass relation
• Deriving ages and horizontal branch properties of integrated stellar populations
• Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud IV: Evidence for Multiple Populations in Hodge 11 and NGC 2210
• A new calibration for the Blue Horizontal Branch
• Star Formation Timescales of the Halo Populations from Asteroseismology and Chemical Abundances
• Stellar populations across the black hole mass - velocity dispersion relation
• Period Change Similarities among the RR Lyrae Variables in Oosterhoff I and Oosterhoff II Globular Systems
• MORGOTH: incorporating horizontal branch modelling into star formation history determinations
• Slowly cooling white dwarfs in M13 from stable hydrogen burning
• The Influence of Galaxy Environment on the Stellar Initial Mass Function of Early-Type Galaxies
• Revisiting binary stars in population synthesis models
• Hubble Space Telescope Imaging of the Outburst Site of M31 RV. II. No Blue Remnant in Quiescence
• Isochrone fitting of Galactic globular clusters - I. NGC 5904
• Weighing stars: the identification of an Evolved Blue Straggler Star in the globular cluster 47 Tucanae
• Investigating the Consistency of Stellar Evolution Models with Globular Cluster Observations via the Red Giant Branch Bump
• The Strikingly Metal-Rich Halo of the Sombrero Galaxy
• The puzzling interpretation of NIR indices: The case of NaI2.21
• Identification of RR Lyrae stars in multiband, sparsely-sampled data from the Dark Energy Survey using template fitting and Random Forest classification
• Nature vs. Nurture: Distinguishing Effects from Stellar Processing and Chemical Evolution on Carbon and Nitrogen in Red Giant Stars
• CAPOS: the bulge Cluster APOgee Survey II. The Intriguing "Sequoia" Globular Cluster FSR 1758
• On the radial extent of the dwarf irregular galaxy IC10
• Multiple populations along the asymptotic giant branch of the globular cluster M 4
• A galaxy's accretion history unveiled from its integrated spectrum
• A grid of Synthetic Spectra for Hot DA White Dwarfs and Its Application in Stellar Population Synthesis
• On the stellar content of the starburst galaxy IC10
• Chemical Abundance Evidence of Enduring High Star Formation Rates in an Early Type Galaxy: High [Ca/Fe] in NGC 5128 Globular Clusters
• Lessons on Star-forming Ultra-diffuse Galaxies from The Stacked Spectra of Sloan Digital Sky Survey
• Blue straggler masses from pulsation properties. II. Topology of the Instability Strip
• Stroemgren - near-infrared photometry of the Baade's Window. I. The bulge globular cluster NGC6528 and the surrounding field
• Imaging an 80 AU Radius Dust Ring Around the F5V Star HD 157587
• A high resolution study of isotopic composition and chemical abundances of blue horizontal branch stars in the globular clusters NGC6397 and NGC6752
• Progenitors of Supernovae Type Ia and Chemical Enrichment in Hydrodynamical Simulations -I. The Single Degenerate Scenario
• Mapping Accreted Stars in Early-Type Galaxies Across the Mass-Size Plane
• Spiral arm kinematics for Milky Way stellar populations
• Variable stars in Local Group Galaxies -- V. The fast and early evolution of the low-mass Eridanus II dSph galaxy
• Relative Ages of Nine Inner Milky Way Globular Clusters from Proper Motion Cleaned Color-Magnitude Diagrams
• Horizontal branch morphology: A new photometric parametrization
• The SAMI Galaxy Survey: Using Tidal Streams and Shells to Trace the Dynamical Evolution of Massive Galaxies
• On the impact of spectral template uncertainties in synthetic stellar populations
• BUDDI-MaNGA II: The Star-Formation Histories of Bulges and Discs of S0s
• On the Color-Metallicity Relation of the Red Clump and the Reddening Toward the Magellanic Clouds
• Another relic bulge globular cluster: ESO 456-SC38 (Djorgovski~2)
• Empirical measurement of the dynamical ages of three globular clusters and some considerations on the use of the dynamical clock
• Multichromatic colour-magnitude diagrams of the globular cluster NGC 6366
• Galaxies within galaxies in the TIMER survey: stellar populations of inner bars are scaled replicas of main bars
• Variable Stars in Large Magellanic Cloud Globular Clusters III: Reticulum
• Spectral matching for abundances and clustering analysis of stars on the giant branches of ω Centauri
• First results from a large-scale proper motion study of the Galactic Centre
• Effects of Alpha-Element Enhancement and the Thermally Pulsing-Asymptotic Giant Branch on Surface Brightness Fluctuation Magnitudes and Broadband Colors
• An Empirical Calibration of the Tip of the Red Giant Branch Distance Method in the Near Infrared. I. HST WFC3/IR F110W and F160W Filters
• On the determination of the He abundance distribution in globular clusters from the width of the main sequence
• The main sequences of NGC2808: constraints on the early disc accretion scenario
• INSPIRE: INvestigating Stellar Population In RElics IV. The Initial Mass Function slope in relics
• The stringent upper limit on jet power in the persistent soft state source 4U~1957+11
• Comparison of Alpha-Element Enhanced Simple Stellar Population Models with Milky Way Globular Clusters
• On a new parameter to estimate the helium content in old stellar systems
• Lithium and oxygen in globular cluster dwarfs and the early disc accretion scenario
• The impact of an updated ${}^{14}N(p,\gamma {)}^{15}O$ reaction rate on advanced evolutionary stages of low-mass stellar models
• Halo intruders in the Galactic bulge revealed by HST and Gaia: the globular clusters Terzan 10 and Djorgovski 1
• The half mass radius of MaNGA galaxies: Effect of IMF gradients
• The Role of Dust in Models of Population Synthesis
• Project AMIGA: Distance and Metallicity Gradients Along Andromeda's Giant Southern Stream from the Red Clump
• Dipolar modes in luminous red giants
• Constraining the true nature of an exotic binary in the core of NGC 6624
• Gaia DR2 orbital properties for field stars with globular cluster-like CN band strengths
• Deriving the star formation histories of galaxies from spectra with simulation-based inference
• The HST Large Programme on NGC 6752. III. Detection of the Peak of the White Dwarf Luminosity Function
• The Horizontal Branch of NGC 1851: Constraints from its RR Lyrae Variables
• Distance and reddening of the Local Group dwarf irregular galaxy NGC 6822
• Measuring the Balmer Jump and Effective Gravity in FGK Stars
• Asteroseismic analysis of two alpha-enhanced stars KIC 7976303 and KIC 8694723
• Magnetic activity and evolution of the four Hyades K giants
• Chemical abundance anticorrelations in globular cluster stars: The effect on cluster integrated spectra
• Isochrone fitting of Galactic globular clusters -- II. NGC6205 (M13)
• Variable Stars in Local Group Galaxies. IV. RR Lyrae stars in the central regions of the low-density galaxy Crater II
• On the Metamorphosis of the Bailey diagram for RR Lyrae stars
• The first confirmed microlens in a globular cluster
• The SAMI Galaxy Survey: galaxy spin is more strongly correlated with stellar population age than mass or environment
• The frequency of very young galaxies in the local Universe: II. The view from SDSS spectra
• Direct Measurements of Giant Star Effective Temperatures and Linear Radii: Calibration Against Spectral Types and V-K Color
• Disc galaxies are still settling: The discovery of the smallest nuclear discs and their young stellar bars
• A stellar census in globular clusters with MUSE. A new perspective on the multiple main sequences of $\omega$ Centauri
• The impact of enhanced He and CNONa abundances on globular cluster relative age-dating methods
• Lithium abundance in lower red giant branch stars of Omega Centauri
• Modeling and Analysis of a Spectrum of the Globular Cluster NGC 2419
• The RR Lyrae Delay-Time Distribution: A Novel Perspective on Models of Old Stellar Populations
• Strömgren uvby photometry of the peculiar globular cluster NGC 2419
• A stellar population synthesis approach to the Oosterhoff dichotomy
• The Cepheids of NGC1866: A Precise Benchmark for the Extragalactic Distance Scale and Stellar Evolution from Modern UBVI Photometry
• Accelerated quenching and chemical enhancement of massive galaxies in a $z\sim 4$ gas-rich halo
• Revisiting the luminosity function of single halo white dwarfs
• The Puzzling Origin of Massive Compact Galaxies in MaNGA
• SHOTGLAS II. MUSE spectroscopy of blue horizontal branch stars in the core of $\omega$ Centauri and NGC 6752
• Colour-colour diagrams and extragalactic globular cluster ages. Systematic uncertainties using the (V-K)-(V-I) diagram
• Using the CIFIST grid of CO5BOLD 3D model atmospheres to study the effects of stellar granulation on photometric colours. II. The role of convection accross the H-R diagram
• Detection of multiple stellar populations in extragalactic massive clusters with JWST
• Models of Metal-Poor Stars with Different Initial Abundances of C, N, O, Mg, and Si. I. Bolometric Corrections Derived from New MARCS Synthetic Spectra and Their Implications for Observed Colour-Magnitude Diagrams
• The Imprint of Element Abundance Patterns on Quiescent Galaxy SEDs
• A faint extended cluster in the outskirts of NGC 5128: evidence of a low mass accretion
• The Massive M31 Cluster G1: Detailed Chemical Abundances from Integrated Light Spectroscopy
• Surface Brightness Fluctuation spectra to constrain stellar population properties
• Slowly cooling white dwarfs in NGC 6752
• Near-infrared observations of RR Lyrae and Type II Cepheid variables in the metal-rich bulge globular cluster NGC 6441
• The red giant branch phase transition: Implications for the RGB luminosity function bump and detections of Li-rich red clump stars
• Spectroscopy of blue horizontal branch stars in NGC 6656 (M22)
• Gemini/Phoenix H-band analysis of the globular cluster AL3
• The VIRUS-P Exploration of Nearby Galaxies (VENGA): The stellar populations and assembly of NGC 2903's bulge, bar, and outer disc
• Astrophysics in 2006
• A Catalog of Distance Determinations for the LAMOST DR8 K Giants in the Galactic Halo
• The dark side of galaxy stellar populations II: The dependence of star formation histories on halo mass and on the scatter of the main sequence
• X-ray Clusters of Galaxies as Cosmological Tools
• Stellar-Encounter Driven Red-Giant Star Mass-Loss in Globular Clusters
• A 1D fluid model of the Centaurus A jet
• Colour-magnitude diagram in simulations of galaxy formation
• Long-term photometry of three active red giants in close binary systems: V2253 Oph, IT Com and IS Vir
• A bag of tricks: Using proper motions of Galactic stars to identify the Hercules ultra-faint dwarf galaxy members
• Blue Straggler Stars in Globular Clusters: a powerful tool to probe the internal dynamical evolution of stellar systems
• Red Giant Branch Bump Star Counts in Data and Stellar Models
• Today a Duo, But Once a Trio? The Double White Dwarf HS 2220$+$2146 May Be A Post-Blue Straggler Binary
• Grids of stellar models including second harmonic and colours: Solar composition
• Monte Carlo simulations of multiple populations in globular clusters: constraints on the initial size of the second generation from binary stars
• A Photometric Study of the Outer Halo Globular Cluster NGC 5824
• The VMC Survey. XVIII. Radial dependence of the low-mass, 0.55--0.82 $M_{\odot }$ stellar mass function in the Galactic globular cluster 47 Tucanae
• Red giants in the outer halo of the elliptical galaxy NGC 5128 / Centaurus A
• Comparison of the Stellar Populations of Bulges and Discs using the MaNGA Survey
• On recent SFR calibrations and the constant SFR approximation
• Evolution of lithium in the disc of the Galaxy and the role of novae
• Old and New Major Mergers in the SOSIMPLE galaxy, NGC 7135
• BUDDI-MaNGA I: A statistical sample of cleanly decomposed bulge and disc spectra
• Infrared photometry and CaT spectroscopy of globular cluster M 28 (NGC 6626)
• Yonsei Evolutionary Population Synthesis (YEPS) Model. III. Surface Brightness Fluctuation of Normal and Helium-enhanced Simple Stellar Populations
• Comparison of Convective Overshooting Models and Their Impact on Abundances from Integrated Light Spectroscopy of Young ($<$ 3 Gyr) Star Clusters
• Successful application of PSF-R techniques to the case of the globular cluster NGC6121 (M4)
• Spectroscopic analysis of the bulge Globular Cluster ESO~456-SC38
• The temperature distribution of horizontal branch stars: methods and first results
• Anomalous Stellar Populations in LSB Galaxies
• The NEID Earth Twin Survey. II. Dynamical Masses in Seven High-acceleration Star Systems
• The properties and environment of very young galaxies in the local Universe
• Young Blue Straggler Stars in the Galactic Field
• Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud V: Multiple Populations in ancient Globular Clusters
• [Mg/Fe] and variable initial mass function: Revision of [$\alpha$/Fe] for massive galaxies
• Revisiting the globular clusters of NGC1052-DF2
• Spectroscopic Observations of Obscured Populations in the Inner Galaxy: 2MASS-GC02, Terzan 4, and the 200 km/s stellar peak
• Lithium in NGC 2243 and NGC 104
• Measuring the stellar population parameters of the early-type galaxy NGC 3923 -- The challenging measurement of the initial mass function
• NLTE Stellar Population Synthesis of Globular Clusters using Synthetic Integrated Light Spectra I: Constructing the IL Spectra
• Predicting light curves of RR Lyrae variables using artificial neural network based interpolation of a grid of pulsation models
• A new visual -- near-infrared diagnostic to estimate the metallicity of cluster and field dwarf stars
• Surface Brightness Fluctuations to constrain secondary stellar populations: Revealing very low-metallicity stars in massive galaxies
• Exploring the Stellar Rotation of Early-type Stars in the LAMOST Medium-resolution Survey. III. Evolution
• Decoding the bifurcated red-giant branch as a tracer of multiple stellar populations in the young Large Magellanic Cloud cluster NGC 2173
• Stellar Populations in the Galactic Center
• The GeMS/GSAOI Galactic Globular Cluster Survey (G4CS) II: Characterization of 47 Tuc with Bayesian Statistics
• Is Fornax 4 the nuclear star cluster of the Fornax dwarf spheroidal galaxy?
• On a new theoretical calibration of the Stroemgren hk metallicity index: NGC6522 as a first test case
• Classical Cepheids, what else?
• Ks Band Luminosity Evolution of the Asymptotic Giant Branch Population Based on Star Clusters in the Large Magellanic Cloud
• Extended Main-Sequence Turnoff and Red Clump in intermediate-age star clusters: A study of NGC 419
• The hyperplane of early-type galaxies: using stellar population properties to increase the precision and accuracy of the fundamental plane as a distance indicator
• Unveiling the nature of HE 0107-5240
• Looking into the faintEst WIth MUSE (LEWIS): Exploring the nature of ultra-diffuse galaxies in the Hydra-I cluster IV. A study of the Globular Cluster population in four UDGs
• Stellar models: firm evidence, open questions and future developments
• Where are the binaries? -- Searching for blue horizontal-branch stars in binary systems in the inner Galactic Halo
• A Wide-Field Survey for Transiting Hot Jupiters and Eclipsing Pre-Main-Sequence Binaries in Young Stellar Associations
• The "canonical" White Dwarf Cooling Sequence of M5
• On the impact of Helium abundance on the Cepheid Period-Luminosity and Wesenheit relations and the Distance Ladder
• Stellar populations with MEGARA: the inner regions of NGC 7025
• Recent Formation of a Spiral Disk Hosting Progenitor Globular Clusters at the center of the Perseus Brightest Cluster Galaxy: I. Spiral Disk
• Ultra-strong MgII absorbers trace both inflowing and outflowing gas: insights from dual down-the-barrel and quasar sightlines
• Globular Cluster UVIT Legacy Survey (GlobULeS) $-$ II. Evolutionary status of hot stars in M3 and M13
• Reconsidering The Bailey Diagrams of ab-type RR Lyrae Stars, Metallicity-Mediated Evolution as the Direct Cause of the Oosterhoff Phenomenon
• Evolutionary and hydrodynamic models of short--period Cepheids
• The SAMI Survey: Evidence for dynamical coupling of ionised gas and young stellar populations
• Towards Precision Cosmology With Improved PNLF Distances Using VLT-MUSE. III. Impact of Stellar Populations in Early-Type Galaxy
• The Predicted Properties of Helium-Enriched Globular Cluster Progenitors at High Redshift
• Growing in number, passive in nature: tracing the evolution of the most massive quiescent galaxies since z ~ 0.8 with BOSS and DESI
• Capivara: A Spectral-based Segmentation Method for IFU Data Cubes
• Horizontal branch structure, age, and chemical composition for very metal-poor extragalactic globular clusters
• WFPC2 UV survey of Galactic Globular Clusters. The Horizontal Branch temperature distribution
• Synthetic spectroscopic indices for identifying multiple stellar populations in globular clusters
• The LEGA-C and SAMI Galaxy Surveys: Quiescent Stellar Populations and the Mass-Size Plane across 6 Gyr
• "Observations" of simulated dwarf galaxies: Star-formation histories from color-magnitude diagrams
• Kinematics of the lens host S0 galaxy NGC 1553: role of secular processes
• Cosmography via stellar archaeology of low-redshift early-type galaxies from SDSS
• The Nuclear Star Cluster of M 74: a fossil record of the very early stages of a star-forming galaxy
• UVES analysis of red giants in the bulge globular cluster NGC 6522
• The Effect Of Alpha-Element Enhancement On Surface Brightness Fluctuation Magnitudes And Broad-Band Colors
• First detection of period doubling in a BL Herculis type star. Observations and theoretical models
• IY Lyr: A Thick-Disk first-overtone RR Lyrae Star with a Possible Neutron Star Companion
• Distance and extinction to the Milky Way spiral arms along the Galactic centre line of sight
• Challenges in Stellar Population Studies
• Old stellar systems in UV: resolved and integrated properties
• The Detailed Chemical Abundance Patterns of M31 Globular Clusters
• Fornax 3D project: assessing the diversity of IMF and stellar population maps within the Fornax Cluster
• Globular clusters in M104: Tracing kinematics and metallicities from the centre to the halo