J/A+A/682/A145 Gaia FGK benchmark stars v3 (Soubiran+, 2024)
Gaia FGK Benchmark Stars: Fundamental Teff and logg of the third version.
Soubiran C., Creevey O., Lagarde N., Brouillet N., Jofre P.,
Casamiquela L., Heiter U., Aguilera-Gomez C., Vitali S., Worley C.,
de Brito Silva D.
<Astron. Astrophys. 682, A145 (2024)>
=2024A&A...682A.145S 2024A&A...682A.145S (SIMBAD/NED BibCode)
+2025A&A...693C...3S 2025A&A...693C...3S
ADC_Keywords: Effective temperatures ; Fundamental catalog ; Stars, diameters ;
Stars, masses ; Stars, F-type ; Stars, G-type ; Stars, K-type
Keywords: standards - surveys - stars: atmospheres -
stars: fundamental parameters - stars: late-type
Abstract:
Large spectroscopic surveys devoted to the study of the Milky Way,
including Gaia, use automated pipelines to determine the atmospheric
parameters of millions of stars. The Gaia FGK benchmark stars are
reference stars with Teff and logg derived through fundamental
relations, independently of spectroscopy, to be used as anchors for
the parameter scale. The first and second versions of the sample have
been extensively used for that purpose, and more generally to help
constrain stellar models.
We provide the third version of the Gaia FGK benchmark stars, an
extended set intended to improve the calibration of spectroscopic
surveys, and their interconnection.
We have compiled about 200 candidates that have precise measurements
of angular diameters and parallaxes. We determined their bolometric
fluxes by fitting their spectral energy distribution. Masses were
determined using two sets of stellar evolution models. In a companion
paper, we describe the determination of metallicities and detailed
abundances.
We provide a new set of 192 Gaia FGK benchmark stars with their
fundamental Teff and logg, and with uncertainties lower than 2% for
most stars. Compared to the previous versions, the homogeneity and
accuracy of the fundamental parameters are significantly improved
thanks to the high quality of the Gaia photometric and astrometric
data.
Description:
The Gaia FGK benchmark stars are reference stars with Teff and logg
derived through fundamental relations, independently of spectroscopy,
to be used as anchors for the parameter scale. We provide here the
third version of the Gaia FGK benchmark stars. We have compiled about
200 candidates which have precise measurements of angular diameters
and parallaxes. We determined their bolometric fluxes by fitting their
spectral energy distribution. Masses were determined using two sets of
stellar evolution models. We provide a new set of 192 Gaia FGK
benchmark stars with their fundamental Teff and logg, and with
uncertainties lower than 2% for most stars. Compared to the previous
versions, the homogeneity and accuracy of the fundamental parameters
are significantly improved thanks to the high quality of the Gaia
photometric and astrometric data.
The parameters are provided for 201 stars: the 192 Gaia FGK benchmark
stars plus 9 stars with an indirect angular diameter measurement. The
fundamental Teff and logg, [Fe/H] from the literature, ThetaLD adopted
measurement, parallax, bolometric flux, derived luminosity, radius and
mass are given.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
catalog.dat 352 201 Parameters of the stars
(corrected version, 04/12/2024, from erratum,
2025A&A...693C...3S 2025A&A...693C...3S)
--------------------------------------------------------------------------------
See also:
III/281 : Gaia FGK benchmark stars v2.1 (Jofre+, 2018)
J/A+A/564/A133 : Gaia FGK benchmark stars: metallicity (Jofre+, 2014)
J/A+A/566/A98 : The Gaia benchmark stars - Library (Blanco-Cuaresma+, 2014)
J/A+A/582/A81 : Gaia FGK benchmark stars: abundances (Jofre+, 2015)
J/A+A/592/A70 : Gaia FGK stars: low-metallicities candidates (Hawkins+, 2016)
Byte-by-byte Description of file: catalog.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- HIP HIP name (HIPNNNNNN)
11- 18 A8 --- HD HD name (HDNNNNNN)
20- 32 A13 --- Name Other name
34- 52 I19 --- GaiaDR3 ? Gaia DR3 Source identifier
54- 61 F8.4 deg RAdeg Right Ascension (ICRS) at Ep=J2000
63- 70 F8.4 deg DEdeg Declination (ICRS) at Ep=J2000
72- 77 F6.3 mas ThetaLD Limb darkened angular diameter
79- 83 F5.3 mas e_ThetaLD Error on ThetaLD
85 I1 --- Indirect [1]? 1 = indirect measurement of ThetaLD
87-105 A19 --- r_ThetaLD Bibcode of the ThetaLD determination
107 I1 --- GBSV1 [1]? 1 = GBS present in V1,
Heiter et al., 2015A&A...582A..49H 2015A&A...582A..49H
109 I1 --- GBSV2 [1]? 1 = GBS present in V2,
Jofre et al., 2018RNAAS...2..152J 2018RNAAS...2..152J,
Cat. III/281
111-116 F6.2 mas Plx Parallax
118-121 F4.2 mas e_Plx Error on Plx
123 A1 --- o_Plx [GHA] Origin for the parallax (1)
125-129 F5.3 mag Av Extinction in V band
131-138 F8.3 10-11W/m2 FbolAv0 ? Bolometric flux 0 extinction
140-146 F7.3 10-11W/m2 e_FbolAv0 ? Uncertainty on Fbol_Av0
148-155 F8.3 10-11W/m2 Fbol Bolometric flux
157-163 F7.3 10-11W/m2 e_Fbol Uncertainty on Fbol
165-168 I4 K Teff Fundamental effective temperature
170-172 I3 K e_Teff Uncertainty on Teff
174-176 F3.1 --- reTeff Relative uncertainty on Teff
178-185 F8.3 Lsun Lum Luminosity
187-193 F7.3 Lsun e_Lum Uncertainty on Lum
195-201 F7.3 Rsun Rad Linear radius
203-207 F5.3 Rsun e_Rad Uncertainty on Rad
209-213 F5.3 Msun MassB Mass from BaSTI
215-219 F5.3 Msun e_MassB Uncertainty on MassB
221-225 F5.3 Msun MassS Mass from STAREVOL
227-231 F5.3 Msun e_MassS Uncertainty on MassS
233-236 F4.2 [cm/s2] logg Logarithm of surface gravity Newton law
238-241 F4.2 [cm/s2] e_logg Uncertainty on logg
243-247 F5.2 [-] [Fe/H] Metallicity from literature
249-252 F4.2 [-] e_[Fe/H] Uncertainty on FeH
254-259 F6.2 uHz Dnu ? Large frequency separation
261-264 F4.2 uHz e_Dnu ? Error on Dnu
266-284 A19 --- r_Dnu Bibcode for Dnu determination
286-291 F6.1 uHz numax ? Frequency of maximum oscillation power
293-297 F5.1 uHz e_numax ? Error on numax
299-317 A19 --- r_numax Bibcode for numax determination
319-322 F4.2 [cm/s2] loggSeis ? Seismic logg
324-327 F4.2 [cm/s2] e_loggSeis ? Uncertainty on loggSeis
329-334 F6.3 Rsun RadSeis ? Seismic radius
336-340 F5.3 Rsun e_RadSeis ? Uncertainty on RadSeis
342-346 F5.3 Msun MassSeis ? Seismic mass
348-352 F5.3 Msun e_MassSeis ? Uncertainty on MassSeis
--------------------------------------------------------------------------------
Note (1): Origin for the parallax as follows:
G = Gaia DR3 2023A&A...674A...1G 2023A&A...674A...1G (Cat. I/355) for 191 stars
H = Hipparcos 2007A&A...474..653V 2007A&A...474..653V (Cat. I/311) for 8 stars
A = Akeson et al. 2021AJ....162...14A 2021AJ....162...14A (Cat. J/AJ/162/14) for 2 stars
--------------------------------------------------------------------------------
Acknowledgements:
Caroline Soubiran, caroline.soubiran(at)u-bordeaux.fr
History:
14-Feb-2024: on-line version
04-Dec-2024: corrected version from corrigendum for 6 stars
(erratum, 2025A&A...693C...3S 2025A&A...693C...3S)
(End) Caroline Soubiran [LAB, France], Patricia Vannier [CDS] 08-Nov-2023