J/AJ/152/6 Parameters of Kepler stars using LAMOST & seismic data (Wang+, 2016)
Calibration of LAMOST stellar surface gravities using the Kepler asteroseismic
data.
Wang L., Wang W., Wu Y., Zhao G., Li Y., Luo A., Liu C., Zhang Y., Hou Y.,
Wang Y., Cao Z.
<Astron. J. 152, 6 (2016)>
=2016AJ....152....6W 2016AJ....152....6W (SIMBAD/NED BibCode)
ADC_Keywords: Stars, fundamental ; Effective temperatures ; Stars, masses ;
Stars, ages ; Spectroscopy ; Abundances, [Fe/H]
Keywords: asteroseismology - stars: fundamental parameters -
techniques: spectroscopic
Abstract:
Asteroseismology is a powerful tool to precisely determine the
evolutionary status and fundamental properties of stars. With the
unprecedented precision and nearly continuous photometric data
acquired by the NASA Kepler mission, parameters of more than 104
stars have been determined nearly consistently. However, most studies
still use photometric effective temperatures (Teff) and metallicities
([Fe/H]) as inputs, which are not sufficiently accurate as suggested
by previous studies. We adopted the spectroscopic Teff and [Fe/H]
values based on the LAMOST low-resolution spectra (R∼1,800), and
combined them with the global oscillation parameters to derive the
physical parameters of a large sample of stars. Clear trends were
found between Δlogg(LAMOST-seismic) and spectroscopic Teff as
well as logg, which may result in an overestimation of up to 0.5dex
for the logg of giants in the LAMOST catalog. We established empirical
calibration relations for the logg values of dwarfs and giants. These
results can be used for determining the precise distances to these
stars based on their spectroscopic parameters.
Description:
We present stellar atmospheric and physical parameters using Large Sky
Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spectra and
Kepler global oscillation parameters for 3,060 stars in the Kepler
field.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 110 3060 Stellar atmospheric and physical parameters
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See also:
V/146 : LAMOST DR1 catalogs (Luo+, 2015)
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/A+A/525/A131 : Kepler red giants Solar-like oscillations (Hekker+, 2011)
J/AJ/142/112 : KIC photometric calibration (Brown+, 2011)
J/A+A/540/A143 : Red giants oscillations observed by Kepler (Mosser+, 2012)
J/A+A/543/A160 : 82 Kepler red giants normalized spectra (Thygesen+, 2012)
J/MNRAS/423/122 : Abundances of 93 solar-type Kepler targets (Bruntt+, 2012)
J/ApJ/749/152 : 22 solar-type stars asteroseismic analysis (Mathur+, 2012)
J/ApJS/199/30 : KIC stars effective temperature scale (Pinsonneault+, 2012)
J/other/Nat/486.375 : Stellar parameters of KOI stars (Buchhave+, 2012)
J/ApJ/767/127 : Asteroseismic solutions for 77 Kepler stars (Huber+, 2013)
J/ApJ/765/L41 : Asteroseismic classification of KIC objects (Stello+, 2013)
J/MNRAS/434/1422 : 169 FGKM stars atmospheric param. (Molenda-Zakowicz+, 2013)
J/ApJS/210/1 : Asteroseismic study of solar-type stars (Chaplin+, 2014)
J/ApJS/210/20 : Small Kepler planets radial velocities (Marcy+, 2014)
J/ApJS/211/2 : Q1-16 Kepler targets revised stellar prop. (Huber+, 2014)
J/ApJS/215/19 : APOKASC catalog of Kepler red giants (Pinsonneault+, 2014)
J/ApJS/220/19 : LAMOST obs. in the Kepler field. I. (De Cat+, 2015)
http://exoplanetarchive.ipac.caltech.edu/ : NASA exoplanet archive
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 8 I8 --- KIC Kepler Input Catalog identifier
10- 12 I3 --- Kepler ?=0 Kepler name (Kepler-NNN)
14- 17 I4 --- KOI ?=0 Kepler Object of Interest identifier
(KOI-NNNN in Simbad)
19- 21 I3 --- S/N ? Signal-to-noise ratio (1)
23- 28 F6.3 mag Kepmag ? Kepler magnitude (1)
30- 33 I4 K Teff Effective temperature
35- 37 I3 K e_Teff Uncertainty in Teff
39- 43 F5.3 [cm/s2] logg Log surface gravity
45- 49 F5.3 [cm/s2] e_logg Uncertainty in logg
51- 56 F6.3 [Sun] [Fe/H] Metallicity
58- 62 F5.3 [Sun] e_[Fe/H] Uncertainty in [Fe/H]
64- 68 F5.3 Msun Mass Mass
70- 74 F5.3 Msun e_Mass Uncertainty in Mass
76- 80 F5.2 Rsun Rad Radius
82- 85 F4.2 Rsun e_Rad Uncertainty in Rad
87- 92 F6.2 Lsun Lum Luminosity
94- 99 F6.2 Lsun e_Lum Uncertainty in Lum
101-105 F5.2 Gyr Age Stellar age
107-110 F4.2 Gyr e_Age Uncertainty in Age
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Note (1): Only in table3.dat.
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Acknowledgements:
Liang Wang, wang.leon(at)gmail.com
(End) Liang Wang [NAOC], Patricia Vannier [CDS] 21-Jun-2016