Gaia FGK benchmark stars: abundances of alpha and iron-peak elements

Abstract

In the current era of large spectroscopic surveys of the Milky Way, reference stars for calibrating astrophysical parameters and chemical abundances are of paramount importance. We determine elemental abundances of Mg, Si, Ca, Sc, Ti, V, Cr, Mn, Co and Ni for our predefined set of Gaia FGK benchmark stars. By analysing high-resolution and high-signal to noise spectra taken from several archive datasets, we combined results of eight different methods to determine abundances on a line-by-line basis. We perform a detailed homogeneous analysis of the systematic uncertainties, such as differential versus absolute abundance analysis, as well as we assess errors due to NLTE and the stellar parameters in our final abundances. Our results are provided by listing final abundances and the different sources of uncertainties, as well as line-by-line and method-by-method abundances. The Gaia FGK benchmark stars atmospheric parameters are already being widely used for calibration of several pipelines applied to different surveys. With the added reference abundances of 10 elements this set is very suitable to calibrate the chemical abundances obtained by these pipelines.

Accepted for publication in A&A, Printer format: 65 pages, 18 figures, 25 tables

References in corpus (41)

• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• Astrophysics Source Code Library
• The Radial Velocity Experiment (RAVE): first data release
• The GALAH Survey: Scientific Motivation
• alpha-, r-, and s-process element trends in the Galactic thin and thick disks
• Determining stellar atmospheric parameters and chemical abundances of FGK stars with iSpec
• The SEGUE Stellar Parameter Pipeline. I. Description and Initial Validation Tests
• A new code for automatic determination of equivalent widths: Automatic Routine for line Equivalent widths in stellar Spectra (ARES)
• Gaia FGK Benchmark Stars: Effective temperatures and surface gravities
• Stellar Abundances in the Solar Neighborhood: The Hypatia Catalog
• The elemental composition of the Sun II. The iron group elements Sc to Ni
• High-precision abundances of elements in solar twin stars: Trends with stellar age and elemental condensation temperature
• DAOSPEC: an automatic code for measuring equivalent widths in high-resolution stellar spectra
• Gaia-ESO Survey: The analysis of high-resolution UVES spectra of FGK-type stars
• NLTE abundances of Mn in a sample of metal-poor stars
• Using chemical tagging to redefine the interface of the Galactic disk and halo
• Tracing chemical evolution over the extent of the Milky Way's Disk with APOGEE Red Clump Stars
• Chemical abundances of 451 stars from the HARPS GTO planet search program: Thin disc, thick disc, and planets
• APOGEE: The Apache Point Observatory Galactic Evolution Experiment
• The Gaia FGK Benchmark Stars - High resolution spectral library
• Atomic and Molecular Data for Optical Stellar Spectroscopy
• The origin and evolution of the odd-Z iron-peak elements Sc, V, Mn, and Co in the Milky Way stellar disk
• The Gaia-ESO Survey: the chemical structure of the Galactic discs from the first internal data release
• Non-LTE line formation for heavy elements in four very metal-poor stars
• 18 Sco: a solar twin rich in refractory and neutron-capture elements. Implications for chemical tagging
• Mg line formation in late-type stellar atmospheres: I. The model atom
• Three Ancient Halo Subgiants: Precise Parallaxes, Compositions, Ages, and Implications for Globular Clusters
• The Alpha Centauri Binary System: Atmospheric Parameters and Element Abundances
• Chemical gradients in the Milky Way from the RAVE data. II. Giant stars
• NLTE study of scandium in the Sun
• Manganese trends in a sample of thin and thick disk stars. The origin of Mn
• Sensitivity study of explosive nucleosynthesis in Type Ia supernovae: I. Modification of individual thermonuclear reaction rates
• Benchmark stars for Gaia: fundamental properties of the Population II star HD140283 from interferometric, spectroscopic and photometric data
• Parent Stars of Extrasolar Planets. VIII. Chemical Abundances for 18 Elements in 31 Stars
• Abundance analysis of barium and mild barium stars
• Deep SDSS optical spectroscopy of distant halo stars II. Iron, calcium, and magnesium abundances
• On the Relative Ages of the $\alpha$-Rich and $\alpha$-Poor Stellar Populations in the Galactic Halo
• The AMBRE Project: Parameterisation of FGK-type stars from the ESO:HARPS archived spectra
• SDSS/SEGUE Spectral Feature Analysis For Stellar Atmospheric Parameter Estimation
• Quest for finding the lost siblings of the Sun
• The Gaia-ESO Survey: α-abundances of metal-poor stars

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• HERBS II: Detailed chemical compositions of Galactic bulge stars
• Fundamental stellar parameters of benchmark stars from CHARA interferometry -- II. Dwarf stars
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• Climbing the cosmic ladder with stellar twins in RAVE with Gaia
• Chemical composition of giant stars in the open cluster IC 4756
• Abundances of disk and bulge giants from hi-res optical spectra: I. O, Mg, Ca, and Ti in the Solar neighborhood and Kepler field samples
• Stellar twins determine the distance of the Pleiades
• A Comparison of the Chemical Composition of Main Sequence and Giant Stars in the Open Cluster NCC 752
• The Gaia-ESO Survey: Matching Chemo-Dynamical Simulations to Observations of the Milky Way
• A distinct halo population revealed from 3D non-LTE magnesium abundances
• Small-scale magnetic fields of the spectroscopic binary T Tauri stars V1878 Ori and V4046 Sir
• The Kepler Smear Campaign: Light curves for 102 Very Bright Stars
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• Characterization of Exoplanet-Host Stars
• Inferring stellar parameters and their uncertainties from high-resolution spectroscopy using invertible neural networks
• Something borrowed, something blue: The nature of blue metal-poor stars inferred from their colours and chemical abundances
• A non-LTE study of silicon abundances in giant stars from the Si I infrared lines in the zJ-band
• On the physical nature of the Wilson-Bappu effect: revising the gravity and temperature dependence
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