Empirical calibration of the near-IR Ca II triplet - I. The stellar library and index definition

Abstract

A new stellar library at the near-IR spectral region developed for the empirical calibration of the Ca II triplet and stellar population synthesis modeling is presented. The library covers the range 8348-9020 Angstrom at 1.5 Angstrom (FWHM) spectral resolution, and consists of 706 stars spanning a wide range in atmospheric parameters. We have defined a new set of near-IR indices, CaT*, CaT and PaT, which mostly overcome the limitations of previous definitions, the former being specially suited for the measurement of the Ca II triplet strength corrected for the contamination from Paschen lines. We also present a comparative study of the new and the previous calcium indices, as well as the corresponding transformations between the different systems. A thorough analysis of the sources of index errors and the procedure to calculate them is given. Finally, index and error measurements for the whole stellar library are provided together with the final spectra.

arXiv comment24 pages, 10 figures, LaTeX. For associated spectra, tables and software, see http://www.ucm.es/info/Astrof/ellipt/CATRIPLET.html or http://www.nottingham.ac.uk/~ppzrfp/CATRIPLET.html

References in corpus (23)

• The Stellar Population Histories of Early-Type Galaxies. II. Controlling Parameters of the Stellar Populations
• The Stellar Population Histories of Local Early-Type Galaxies. I. Population Parameters
• A new chemo-evolutionary population synthesis model for early-type galaxies. I: Theoretical basis
• Galactic Globular Cluster Metallicity Scale from the Calcium Triplet. II. Rankings, Comparisons and Puzzles
• E and S0 galaxies in the central part of the Coma cluster: Ages, metal abundances and dark matter
• A new chemo-evolutionary population synthesis model for early-type galaxies. II: Observations and Results
• Ca II Triplet Spectroscopy of Giants in SMC Star Clusters: Abundances, Velocities and the Age-Metallicity Relation
• Galactic Globular Cluster Metallicity Scale from the Ca II Triplet. I. Catalog
• The Abundance Spread Among Giants and Subgiants in the Globular Cluster Omega Centauri
• A Robust Age Indicator for Old Stellar Populations
• Kinematics, ages, and metallicities of star clusters in NGC 1316: A 3 Gyr old merger remnant
• Empirical calibration of the near-IR Ca II triplet - II. The stellar atmospheric parameters
• The Metallicity Distribution Function of Red Giants in the LMC
• Colour-magnitude relations and spectral line strengths in the Coma cluster
• Stellar Populations and Ages of M82 Super Star Clusters
• Empirical calibration of the λ4000 Åbreak
• Usage of Red supergiant spectral features as age indicators in starburst regions
• Near-infrared Spectral Features in Single-aged Stellar Populations
• Calcium Triplet Synthesis
• A major star formation region in the receding tip of the stellar Galactic bar
• Library of medium-resolution fiber optic echelle spectra of F, G, K, and M field dwarfs to giants stars
• Two-Dimensional Line Strength Maps in Three Well-studied Early-Type Galaxies
• The metallicity of Palomar 1

Cited by in corpus (256)

• SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way Galaxy, and Extra-Solar Planetary Systems
• Evolutionary population synthesis: models, analysis of the ingredients and application to high-z galaxies
• Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
• Modeling the Panchromatic Spectral Energy Distributions of Galaxies
• Evolutionary Stellar Population Synthesis with MILES. Part I: The Base Models and a New Line Index System
• An updated MILES stellar library and stellar population models
• The Indo-U.S. Library of Coude Feed Stellar Spectra
• UV-extended E-MILES stellar population models: young components in massive early-type galaxies
• The SEGUE Stellar Parameter Pipeline. I. Description and Initial Validation Tests
• The angular size of dwarf stars and subgiants - Surface brightness relations calibrated by interferometry
• STELIB: a library of stellar spectra at R~2000
• Evolutionary stellar population synthesis with MILES - II. Scaled-solar and α-enhanced models
• Evolutionary synthesis of galaxies at high spectral resolution with the code PEGASE-HR
• The Data Analysis Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey: Overview
• The SEGUE Stellar Parameter Pipeline. II. Validation with Galactic Globular and Open Clusters
• On the nature and evolution of the unique binary pulsar J1903+0327
• MIUSCAT: extended MILES spectral coverage. I. Stellar populations synthesis models
• New fully empirical calibrations of strong-line metallicity indicators in star forming galaxies
• On the massive stellar population of the Super Star Cluster Westerlund 1
• SPIDER VIII - Constraints on the Stellar Initial Mass Function of Early-type Galaxies from a Variety of Spectral Features
• Medium-resolution Isaac Newton Telescope library of empirical spectra - II. The stellar atmospheric parameters
• NOAO Fundamental Plane Survey -- II. Age and Metallicity along the Red Sequence
• Frequency of Debris Disks around Solar-Type Stars: First Results from a Spitzer/MIPS Survey
• Higher-order Balmer line indices in alpha/Fe-enhanced stellar population models
• Counting Low-Mass Stars in Integrated Light
• The NIR Ca II triplet at low metallicity - Searching for extremely low-metallicity stars in classical dwarf galaxies
• The Data Analysis Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey: Emission-Line Modeling
• ExoMol line lists XVIII. The high temperature spectrum of VO
• Discovery of a Faint Companion to Alcor Using MMT/AO 5 $\mu$m Imaging
• Automatic Determination of Stellar Atmospheric Parameters and Construction of Stellar Spectral Templates of the Guoshoujing Telescope (LAMOST)
• A non-LTE study of neutral and singly-ionized calcium in late-type stars
• MUSE sneaks a peek at extreme ram-pressure stripping events. I. A kinematic study of the archetypal galaxy ESO137-001
• Radial variations in the stellar initial mass function of early-type galaxies
• The SAGES Legacy Unifying Globulars and GalaxieS Survey (SLUGGS): Sample definition, methods, and initial results
• Empirical calibration of the near-IR CaII triplet - IV. The stellar population synthesis models
• Exploring Halo Substructure with Giant Stars XI: The Tidal Tails of the Carina Dwarf Spheroidal and the Discovery of Magellanic Cloud Stars in the Carina Foreground
• The stellar IMF determined in early-type galaxies from a non-degenerate set of optical line indices
• Near-IR line-strengths in elliptical galaxies: evidence for IMF variations?
• A High-Resolution Stellar Library for Evolutionary Population Synthesis
• Stellar Kinematics and Metallicities in the Ultra-Faint Dwarf Galaxy Reticulum II
• Internal Properties of Ultra-Compact Dwarf Galaxies in the Virgo Cluster
• The SEGUE Stellar Parameter Pipeline. IV. Validation with an Extended Sample of Galactic Globular and Open Clusters
• Supernovae in Early-Type Galaxies: Directly Connecting Age and Metallicity with Type Ia Luminosity
• Calcium II Triplet Spectroscopy of LMC Red Giants. I. Abundances and Velocities for a Sample of Populous Clusters
• Exploring Halo Substructure with Giant Stars: Spectroscopy of Stars in the Galactic Anticenter Stellar Structure
• The Gaia astrophysical parameters inference system (Apsis). Pre-launch description
• The SEGUE Stellar Parameter Pipeline. V. Estimation of Alpha-Element Abundance Ratios From Low-Resolution SDSS/SEGUE Stellar Spectra
• They might be giants: luminosity class, planet frequency, and planet-metallicity relation of the coolest Kepler target stars
• The Chemical Enrichment History of the Large Magellanic Cloud
• The Effects of Age on Red Giant Metallicities Derived from the Near-Infrared Ca II Triplet
• The SLUGGS Survey: Calcium Triplet-based Spectroscopic Metallicities for Over 900 Globular Clusters
• Metallicities, relative ages and kinematics of stellar populations in omega Centauri
• SDSS-IV MaStar -- A Large and Comprehensive Empirical Stellar Spectral Library: First Release
• Time Inference with MUSE in Extragalactic Rings (TIMER): Properties of the Survey and High-Level Data Products
• New Clues on the Calcium Underabundance in Early-Type Galaxies
• The SLUGGS Survey: Wide-field Stellar Kinematics of Early-type Galaxies
• Deep Extragalactic VIsible Legacy Survey (DEVILS): SED Fitting in the D10-COSMOS Field and the Evolution of the Stellar Mass Function and SFR-$M_{\star }$ relation
• The Near Infrared Ca II Triplet as Metallicity Indicator: II Extension to extremely metal-poor metallicity regimes
• The population of OB supergiants in the starburst cluster Westerlund 1
• The X-shooter Spectral Library (XSL): I. DR1. Near-ultraviolet through optical spectra from the first year of the survey
• A New Method for Isolating M31 Red Giant Stars: The Discovery of Stars out to a Radial Distance of 165 Kiloparsecs
• Small scatter and nearly-isothermal mass profiles to four half-light radii from two-dimensional stellar dynamics of early-type galaxies
• Probing the near infrared stellar population of Seyfert galaxies
• Spectroscopic survey of the Galaxy with Gaia I. Design and performance of the Radial Velocity Spectrometer
• The Comparative Chemical Evolution of an Isolated Dwarf Galaxy: A VLT and Keck Spectroscopic Survey of WLM
• A spectroscopic survey of dwarf galaxies in the Coma Cluster: Stellar populations, environment and downsizing
• BAT AGN Spectroscopic Survey - IV: Near-Infrared Coronal Lines, Hidden Broad Lines, and Correlation with Hard X-ray Emission
• Secular- and merger-built bulges in barred galaxies
• Formation and evolution of dwarf early-type galaxies in the Virgo cluster I. Internal kinematics
• MUSE observations of M87: radial gradients for the stellar initial-mass function and the abundance of Sodium
• The Yellow and Red Supergiants of M33
• Empirical calibration of the near-IR Ca II triplet - III. Fitting functions
• A Survey of Merger Remnants II: The Emerging Kinematic and Photometric Correlations
• The puzzlingly small CaII triplet absorption in elliptical galaxies
• New seismological results on the G0 IV eta Bootis
• The SLUGGS survey: Exploring the metallicity gradients of nearby early-type galaxies to large radii
• The Chemical Enrichment History of the Fornax Dwarf Spheroidal Galaxy from the Infrared Calcium Triplet
• The Infrared Ca II triplet as metallicity indicator
• An optimized H_βindex for disentangling stellar population ages
• The initial mass function of a massive relic galaxy
• Dominant dark matter and a counter rotating disc: MUSE view of the low luminosity S0 galaxy NGC 5102
• IMF and [Na/Fe] abundance ratios from optical and NIR Spectral Features in Early-type Galaxies
• Light echoes reveal an unexpectedly cool Eta Carinae during its 19th-century Great Eruption
• Whiting 1: the youngest globular cluster associated with the Sgr dSph
• A massive association around the obscured open cluster RSGC3
• Exploring the mass assembly of the early-type disc galaxy NGC3115 with MUSE
• The X-Shooter Spectral Library (XSL): Data Release 2
• IMF radial gradients in most massive early-type galaxies
• The optical structure of the starburst galaxy M82 - I: Dynamics of the disk and inner-wind
• Kinematic properties as probes of the evolution of dwarf galaxies in the Virgo cluster
• Dust Sensitivity of Absorption-Line Indices
• Using spectroscopic data to disentangle stellar population properties
• Prolate rotation and metallicity gradient in the transforming dwarf galaxy Phoenix
• The detection of stellar velocity dispersion drops in the central regions of five isolated Seyfert spirals
• The SLUGGS Survey: stellar kinematics, kinemetry and trends at large radii in 25 early-type galaxies
• The Next Generation Virgo Cluster Survey. XII. Stellar Populations and Kinematics of Compact, Low-Mass Early-Type Galaxies from Gemini GMOS-IFU Spectroscopy
• MIUSCAT: extended MILES spectral coverage. II. Constraints from optical photometry
• ATLAS vs. NextGen model atmospheres: a combined analysis of synthetic spectral energy distributions
• Gemini/GMOS IFU stellar kinematics of the nuclear region of six nearby active galaxies
• The age of the Milky Way inner stellar spheroid from RR Lyrae population synthesis
• The Fornax 3D project: a two-dimensional view of the stellar initial mass function in the massive lenticular galaxy FCC 167
• The mass and radius of the M-dwarf in the short period eclipsing binary RR Caeli
• The puzzlingly large Ca II triplet absorption in dwarf elliptical galaxies
• Dwarf elliptical galaxies with kinematically decoupled cores
• Fast and Slow Rotators in the Densest Environments: a SWIFT IFS study of the Coma Cluster
• A new stellar library in the region of the CO index at 2.3 $\mu$m. New index definition and empirical fitting functions
• Modelling simple stellar populations in the near-ultraviolet to near-infrared with the X-shooter Spectral Library (XSL)
• SPIDER X - Environmental effects in central and satellite early-type galaxies through the stellar fossil record
• Metallicity Gradients at Large Galactocentric Radii Using the Near-infrared Calcium Triplet
• Exploring Halo Substructure with Giant Stars: The Nature of the Triangulum-Andromeda Stellar Features
• Red supergiants around the obscured open cluster Stephenson 2
• Radial Trends in IMF-Sensitive Absorption Features in Two Early-Type Galaxies: Evidence for Abundance-Driven Gradients
• Fully cosmological virtual massive galaxies at z=0: kinematical, morphological, and stellar population characterisation
• Comparing six evolutionary population synthesis models through spectral synthesis on galaxies
• SDSS-IV MaNGA: Stellar initial mass function variation inferred from Bayesian analysis of the integral field spectroscopy of early type galaxies
• Toward a Better Understanding of Cosmic Chronometers: Stellar Population Properties of Passive Galaxies at Intermediate Redshift
• The non-universality of the low-mass end of the IMF is robust against the choice of SSP model
• Stellar Metallicities and Kinematics in a Gas-Rich Dwarf Galaxy: First Calcium Triplet Spectroscopy of RGB Stars in WLM
• The Infrared Telescope Facility (IRTF) spectral library: spectral diagnostics for cool stars
• Proxima Centauri as a Benchmark for Stellar Activity Indicators in the Near Infrared
• A deep AAOmega survey of low-luminosity galaxies in the Shapley Supercluster: Stellar population trends
• The SLUGGS survey: Globular cluster stellar population trends from weak absorption lines in stacked spectra
• Abundance ratios and IMF slope in the dwarf elliptical galaxy NGC~1396 with MUSE
• Unveiling the Sigma-Discrepancy in IR-Luminous Mergers I: Dust & Dynamics
• Chromospheric activity among fast rotating M-dwarfs in the open cluster NGC 2516
• TDCOSMO 2025: Cosmological constraints from strong lensing time delays
• Characterizing K2 Candidate Planetary Systems Orbiting Low-Mass Stars IV: Updated Properties for 86 Cool Dwarfs Observed During Campaigns 1-17
• PPAK Wide field Integral Field Spectroscopy of NGC 628 III. Stellar population properties
• Dissecting galactic bulges in space and time I: the importance of early formation scenarios vs. secular evolution
• Optical/NIR stellar absorption and emission-line indices from luminous infrared galaxies
• Radial gradients in initial mass function sensitive absorption features in the Coma brightest cluster galaxies
• The Michigan/MIKE Fiber System Survey of Stellar Radial Velocities in Dwarf Spheroidal Galaxies: Acquisition and Reduction of Data
• Exploring Halo Substructure with Giant Stars. XV. Discovery of a Connection between the Monoceros Ring and the Triangulum-Andromeda Overdensity?
• The Calcium Triplet metallicity calibration for galactic bulge stars
• Kinematics, ages and metallicities for F and G type stars in the solar neighbourhood
• Deriving Metallicities From the Integrated Spectra of Extragalactic Globular Clusters Using the Near-Infrared Calcium Triplet
• Near-IR spectroscopic ages of massive star clusters in M82
• The near-IR Ca II triplet - sigma relation for bulges of spiral galaxies
• The Mass-Activity relationships in M and K dwarfs. I. Stellar parameters of our sample of M and K dwarfs
• Stellar kinematics for the central spheroid in the Polar Disk Galaxy NGC4650A
• Early-type galaxies in the Coma cluster: a new piece in the calcium puzzle
• The MASSIVE Survey -- XV. A Stellar Dynamical Mass Measurement of the Supermassive Black Hole in Massive Elliptical Galaxy NGC 1453
• Minor axis kinematics of 19 S0-Sbc bulges
• Radial measurements of IMF-sensitive absorption features in two massive ETGs
• Coronal Line Forest AGN I: physical properties of the emission-line regions
• The initial mass functions of M31 and M32 through far red stellar absorption features
• The WAGGS project - II. The reliability of the calcium triplet as a metallicity indicator in integrated stellar light
• ESO452-SC11: The lowest mass globular cluster with a potential chemical inhomogeneity
• Elemental Abundances in M31: Alpha and Iron Element Abundances from Low-Resolution Resolved Stellar Spectroscopy in the Stellar Halo
• A stellar census in globular clusters with MUSE -- Extending the CaT-metallicity relation below the horizontal branch and applying it to multiple populations
• Identification of red supergiants in nearby galaxies with mid-IR photometry
• Probing the boundary between star clusters and dwarf galaxies: A MUSE view on the dynamics of Crater/Laevens I
• Towards a Solution for the Ca II Triplet Puzzle : Results from Dwarf Elliptical Galaxies
• A New Definition for the Ca4227 Feature: Is Calcium Really Underabundant in Early-type Galaxies?
• A metal-poor ultra compact dwarf galaxy at a kiloparsec distance from the low-mass elliptical galaxy FCC47
• Multi-wavelength observations of a new redback millisecond pulsar candidate: 3FGL J0954.8-3948
• Radial velocities and metallicities from infrared Ca II triplet spectroscopy of open clusters: Berkeley 26, Berkeley 70, NGC 1798, and NGC 2266
• Looking into the faintEst WIth MUSE (LEWIS): on the nature of ultra-diffuse galaxies in the Hydra-I cluster.I. Project description and preliminary results
• A Radial Velocity and Calcium Triplet abundance survey of field Small Magellanic Cloud giants
• Differences between CO- and calcium triplet-derived velocity dispersions in spiral galaxies: evidence for central star formation?
• Stellar populations of galaxies in the ALHAMBRA survey up to $z\sim 1$. I. MUFFIT: A Multi-Filter Fitting code for stellar population diagnostics
• Spotting Stellar Activity Cycles in Gaia Astrometry
• The Influence of Galaxy Environment on the Stellar Initial Mass Function of Early-Type Galaxies
• Hidden in the Haystack: Low-luminosity globular clusters towards the Milky Way bulge
• Strong CO Absorption Features in Massive ETGs
• Stellar dynamics of blue compact galaxies. II. Further indications of a merger in ESO 338-IG04
• Characterisation of red supergiants in the Gaia spectral range
• The MASSIVE Survey -- XVII. A Triaxial Orbit-based Determination of the Black Hole Mass and Intrinsic Shape of Elliptical Galaxy NGC 2693
• SDSS/SEGUE Spectral Feature Analysis For Stellar Atmospheric Parameter Estimation
• On the accretion of a new group of galaxies onto Virgo: I. Internal kinematics of nine in-falling dEs
• A luminous dust-obscured Tidal Disruption Event candidate in a star forming galaxy at 42 Mpc
• RAVE spectroscopy of luminous blue variables in the Large Magellanic Cloud
• Mg and TiO spectral features at the near-IR: Spectrophotometric index definitions and empirical calibrations
• HR-pyPopStar: high wavelength-resolution stellar populations evolutionary synthesis model
• Stellar Population Synthesis with Distinct Kinematics: Multi-Age Asymmetric Drift in SDSS-IV MaNGA Galaxies
• Star-gas decoupling and a non-rotating stellar core in He 2-10: Integral field spectroscopy with FLAMES/ARGUS
• Forecasting Chemical Abundance Precision for Extragalactic Stellar Archaeology
• Young stellar population gradients in central cluster galaxies from NUV and optical spectroscopy
• Identification of dusty massive stars in star-forming dwarf irregular galaxies in the Local Group with mid-IR photometry
• The MASSIVE Survey XIII -- Spatially Resolved Stellar Kinematics in the Central 1 kpc of 20 Massive Elliptical Galaxies with the GMOS-North Integral-Field Spectrograph
• The young massive star cluster Westerlund 2 observed with MUSE. I. First results on the cluster internal motion from stellar radial velocities
• SDSS-IV MaNGA: Bayesian analysis of the star formation history of low-mass galaxies in the local Universe
• SDSS-IV MaStar: Data-driven Parameter Derivation for the MaStar Stellar Library
• Deriving the star formation histories of galaxies from spectra with simulation-based inference
• PSR J1903+0327 : A Unique Milli-Second Pulsar with a Main-Sequence Companion Star
• Recovering age-metallicity distributions from integrated spectra: validation with MUSE data of a nearby nuclear star cluster
• MUSE library of stellar spectra
• A Tale of Two Impostors: SN2002kg and SN1954J in NGC 2403
• Berkeley 51, a young open cluster with four yellow supergiants
• Peanut-shaped metallicity distributions in bulges of edge-on galaxies: the case of NGC 4710
• LBT/MODS spectroscopy of globular clusters in the irregular galaxy NGC 4449
• Monitoring luminous yellow massive stars in M33: new yellow hypergiant candidates
• Nonlinear Color--Metallicity Relations of Globular Clusters. VI. On Calcium II Triplet Based Metallicities of Globular Clusters in Early-type Galaxies
• The Integrated Calcium II Triplet as a Metallicity Indicator: Comparisons with High Resolution [Fe/H] in M31 Globular Clusters
• Disk mass and disk heating in the spiral galaxy NGC 3223
• Spectral decomposition of the stellar kinematics in the polar disk galaxy NGC 4650A
• Stellar parameters for the First Release of the MaStar Library: An Empirical Approach
• Fabry-Perot Absorption Line Spectroscopy of the Galactic Bar. II. Stellar Metallicities
• Mild radial variations of the stellar IMF in the bulge of M31
• Calibrating models of ultralow-mass stars
• A detailed understanding of the rotation-activity relationship using the 300 Myr old open cluster NGC 3532
• The APOGEE Library of Infrared SSP Templates (A-LIST): High-Resolution Simple Stellar Population Spectral Models in the H-Band
• Surface Brightness Fluctuation spectra to constrain stellar population properties
• A Search for Metal-poor Stars Pre-enriched by Pair-instability Supernovae I. A Pilot Study for Target Selection from Sloan Digital Sky Survey (SDSS)
• Red Supergiants in the JWST Era. I: Near-IR Photometric Diagnostics
• Panchromatic calibration of Ca II triplet luminosity dependence
• The CaT strength in Seyfert nuclei revisited: analyzing young stars and non-stellar light contributions to the spectra
• Reliability checks on the Indo-US Stellar Spectral Library using Artificial Neural Networks and Principal Component Analysis
• MEGARA-GTC Stellar Spectral Library (I)
• The young open cluster Berkeley 55
• Radial velocities and metallicities from infrared Ca II triplet spectroscopy of open clusters II. Berkeley 23, King 1, NGC 559, NGC 6603 and NGC 7245
• The open cluster King~1 in the second quadrant
• Unravelling the Origin of the Counter-Rotating Core in IC 1459 with KMOS and MUSE
• Synthesis of H-alpha absorption in old stellar systems: Formation of the cluster red sequence by "Downsizing"
• Collisions of Terrestrial Worlds: The Occurrence of Extreme Mid-Infrared Excesses around Low-Mass Field Stars
• A new synthetic library of the Near-Infrared CaII triplet indices. I.Index Definition, Calibration and Relations with stellar atmospheric parameters
• A likely runaway star cluster in the outer disc of the Large Magellanic Cloud
• Detection of young ($\le$20 Myr) stellar populations in apparently quenched low-mass galaxies using red spectral line indices
• Seeing Red in NGC 1978, NGC 55, and NGC 3109
• Metallicities of Outer Halo M31 Globular Clusters from Integrated Light Calcium-II Triplet Spectroscopy
• Multicolor photometry and spectroscopy of the yellow supergiant with dust envelope HD 179821=V1427 Aquilae
• Near-infrared spectroscopic indices for unresolved stellar populations. II. Index measurements
• The BRAVE Program - I: Improved Bulge Stellar Velocity Dispersion Estimates for a Sample of Active Galaxies
• SDSS-IV MaStar: Stellar Parameter Determination with Continuum-Supplemented Full-Spectrum Fitting
• LEMONY--a Library of Empirical Medium-resolution spectra by Observations with the NAOC Xinglong 2.16\,m and YNAO Gaomeigu 2.4\,m telescopes
• The SAMI Galaxy Survey: Trends in [α/Fe] as a Function of Morphology and Environment
• Inferring the Helium abundance of extragalactic Globular Clusters using Integrated Spectra
• A Galactic Self-Portrait: Density Structure and Integrated Properties of the Milky Way Disk
• An Oxford SWIFT Integral Field Spectroscopy study of 14 early-type galaxies in the Coma cluster
• Surface Brightness Fluctuations to constrain secondary stellar populations: Revealing very low-metallicity stars in massive galaxies
• The Stellar Contents of Intermediate Mass Disk Galaxies in the Virgo Cluster. I. GMOS Spectra
• CO radial gradients in the bulge of M31
• Multiple populations within globular clusters in Early-type galaxies Exploring their effect on stellar initial mass function estimates
• Deciphering the Origin of Ionized Gas in IC 1459 with VLT/MUSE
• Chemical characterisation of the X-shooter Spectral Library (XSL): [Mg/Fe] and [Ca/Fe] abundances
• Outflows in the Seyfert 2 galaxy NGC5643 traced by the [SIII] emission
• H-alpha as a Luminosity Class Diagnostic for K- and M-type Stars
• Snapshot metallicity estimate of resolved stellar systems through Lick Fe5270 diagnostic
• Comparing IMF-sensitive indices of intermediate-mass quiescent galaxies in various environments
• Searching for Galactic Red Supergiants with Gaia RVS Spectra
• Relation between spectral indices and binary fractions in GCs
• Revisiting the near infrared Calcium triplet as metallicity indicator
• Puzzling radial gradients of K-band absorption features in the giant elliptical galaxy M87
• TP-AGB stars and stellar population properties of a post-starburst galaxy at $z\sim 2$ through optical and NIR spectroscopy with JWST
• A STIS Atlas of CaII Triplet Absorption Line Kinematics in Galactic Nuclei
• Past, present and Future of the Scaling Relations of Galaxies and Active Galactic Nuclei
• From gas to stars: MUSEings on the internal evolution of IC 1613
• SDSS-IV MaStar: Determination of Stellar Parameters Using Bayesian Averaging
• The X-shooter Spectral Library (XSL): Data Release 3
• The Stellar Initial Mass Function and Population Properties of M89 from Optical and NIR Spectroscopy: Addressing Biases in Spectral Index Analysis
• J-PLUS: Searching for very metal-poor star candidates using the SPEEM pipeline
• A runaway T-Tauri star leaving an extended trail
• SPAN: A cross-platform Python GUI software for optical and near-infrared spectral analysis
• Surface Brightness Fluctuations for constraining the chemical enrichment of massive galaxies
• HR-pyPopStar II: high spectral resolution evolutionary synthesis models low metallicity expansion and the properties of the stellar populations of dwarf galaxies
• Fornax 3D project: assessing the diversity of IMF and stellar population maps within the Fornax Cluster