J/AJ/165/108 Properties of 600 bona fide stars in the Hyades (Brandner+, 2023)
Astrophysical Properties of 600 Bona Fide Single Stars in the Hyades Open
Cluster.
Brandner W., Calissendorff P., Kopytova T.
<Astron. J., 165, 108 (2023)>
=2023AJ....165..108B 2023AJ....165..108B
ADC_Keywords: Clusters, open; Stars, masses; Photometry, G band;
Effective temperatures
Keywords: Open star clusters ; Stellar evolution ; Stellar dynamics ;
Stellar colors ; Stellar effective temperatures ; Stellar
luminosities ; Stellar masses ; Young star clusters ; Stellar
abundances ; Stellar properties ; Stellar ages ; Stellar types
Abstract:
The determination of the astrophysical properties of stars remains
challenging and frequently relies on the application of stellar
models. Stellar sequences in nearby open clusters provide some of the
best means to test and calibrate stellar evolutionary models and
isochrones and to use these models to assign astrophysical properties
consistently to a large sample of stars. We aim at updating the
single-star sequence of the members of the Hyades cluster, identifying
the best-fitting isochrones, and determining the astrophysical
properties of the stars. The Gaia Catalog of Nearby Stars provides a
comprehensive sample of high-probability members of the Hyades
cluster. We apply a multistep method to flag photometric outliers and
to identify bona fide single stars and likely binary and multiple
systems. The single stars define a tight sequence, which in the mass
range 0.12-2.2M☉ is well fitted by PARSEC isochrones for a
supersolar metallicity of [M/H]=+0.18±0.03 and an age of
775±25Myr. The isochrones enable us to assign mass, effective
temperature, luminosity, and surface gravity to each of the 600 bona
fide single main-sequence stars. The observed sequence validates the
PARSEC isochrones. The derived stellar properties can serve as
benchmarks for atmospheric and evolutionary models and for all-sky
catalogs of stellar astrophysical properties. The stellar properties
are also relevant for studies of exoplanet properties among Hyades
exoplanet hosts.
Description:
Using the PARSEC version 1.2S CMD web interface, we obtain families of
isochrones in the Gaia DR3 photometric system. The range of age and
abundance values is based on litterature values from isochrone fitting
to stars in the Hyades open cluster as compiled by
Brandner+, 2023, J/MNRAS/518/662.
Objects:
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RA (2000) DE Designation(s)
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04 29 47.28 +16 56 52.8 Hyades = C 0424+157
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 165 602 Astrophysical parameters of bonafide single stars
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See also:
I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)
J/A+A/585/A7 : Hyades single stars fiducial photometry (Kopytova+, 2016)
J/A+A/603/A2 : Gaia-ESO abundances radial distribution (Magrini+, 2017)
J/A+A/649/A6 : Gaia Cat. of Nearby Stars - GCNS (Gaia collaboration, 2021)
J/MNRAS/508/3877 : Catalogue of white dwarfs in Gaia EDR3 (Gentile+, 2021)
J/A+A/649/A3 : Gaia EDR3 photometric passbands (Riello+, 2021)
J/MNRAS/518/662 : Benchmarking MESA isochrones with Hyades (Brandner+, 2023)
J/A+A/670/A19 : Fifth Catalogue of Nearby Stars (CNS5) (Golovin+, 2023)
http://stev.oapd.inaf.it/cgi-bin/cmd : CMD web interface
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- Gaia Gaia EDR3 or DR2 source identifier
21- 30 F10.6 deg RAdeg [0.65/359] Barycentric Right ascension
(ICRS) at Ep=2016.0
32- 41 F10.6 deg DEdeg [-342/57] Barycentric Declination
(ICRS) at Ep=2016.0
43- 48 F6.3 pc dpgeo [21.1/99.6] Median photogeometric distance
posterior (1)
50- 55 F6.3 pc e_dpgeo [21/99] The 16th quantile of dpgeo
57- 63 F7.3 pc E_dpgeo [21/101] The 84th quantile of dpgeo
65- 71 F7.4 mag Gmag [4.16/18.48] Gaia G-band apparent magnitude
73- 78 F6.4 mag e_Gmag [0.0001/0.004] Uncertainty in Gmag
80- 86 F7.4 mag BPmag [4.25/21] Gaia BP-band apparent magnitude
88- 93 F6.4 mag e_BPmag [0.0003/0.2] Uncertainty in BPmag
95-101 F7.4 mag RPmag [4.03/17.1] Gaia RP-band apparent magnitude
103-108 F6.4 mag e_RPmag [0.0003/0.01] Uncertainty in RPmag
110-115 F6.4 Msun Mass [0.11/2.21] Mass (2)
117-122 F6.4 Msun e_Mass [0.001/0.04] Uncertainty in mass
124-129 F6.4 [K] [Teff] [3.4/3.91] log effective temperature (2)
131-136 F6.4 [K] e_[Teff] [0.0003/0.009] Uncertainty in [Teff]
138-144 F7.4 [Lsun] [Lum] [-3.04/1.56] log Luminosity (2)
146-151 F6.4 [Lsun] e_[Lum] [0.001/0.08] Uncertainty in [Lum]
153-158 F6.4 [cm/s2] logg [3.75/5.12] log surface gravity (2)
160-165 F6.4 [cm/s2] e_logg [0.0005/0.06] Uncertainty in logg
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Note (1): Photo-geometric distance posteriors are according
to Bailer-Jones+, 2021, I/352.
Note (2): Stellar astrophysical parameters are based on PARSEC 1.2S
for log(age)=8.89±0.01yr, [M/H]=0.18±0.03, Av=3.1mmag.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 16-Jun-2023