J/ApJS/260/45 Stellar parameters of M-type stars from LAMOST DR8 (Ding+, 2022)
Stellar atmospheric parameters of M-type stars from LAMOST DR8.
Ding M.-Y., Shi J.-R., Wu Y., Jones H.R.A., Yan H.-L., Li C.-Q., Gao Q.,
Chen T.-Y., Zhang J.-H., Liu S., Yan T.-S., Xie X.-J.
<Astrophys. J. Suppl. Ser., 260, 45 (2022)>
=2022ApJS..260...45D 2022ApJS..260...45D
ADC_Keywords: Stars, M-type; Abundances, [Fe/H]; Radial velocities;
Spectra, optical; Surveys
Keywords: M stars ; Late-type stars ; Stellar atmospheres ;
Stellar physics ; Sky surveys ; Catalogs ; Atomic spectroscopy ;
Spectroscopy
Abstract:
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST)
Low Resolution Spectroscopic Survey (LRS) provides massive
spectroscopic data on M-type stars, and the derived stellar parameters
could bring vital help to various studies. We adopt the ULySS package
to perform χ2 minimization with model spectra generated from the
MILES interpolator and determine the stellar atmospheric parameters
for the M-type stars from LAMOST LRS Data Release 8. Comparison with
the stellar parameters from the APOGEE Stellar Parameter and Chemical
Abundance Pipeline (ASPCAP) suggests that most of our results have
good consistency. For M dwarfs, we achieve dispersions better than
74K, 0.19dex, and 0.16dex for Teff, logg, and [Fe/H], while for
M giants, the internal uncertainties are 58K, 0.32dex, and 0.26dex,
respectively. Compared to ASPCAP we also find a systematic
underestimation of ΔTeff=-176K for M dwarfs and a systematic
overestimation of Δlogg=0.30dex for M giants. However, such
differences are less significant when we make a comparison with common
stars from other literature, which indicates that systematic biases
exist in the difference between ASPCAP and other measurements. A
catalog of 763,136 spectra corresponding to 616,314 M-type stars with
derived stellar parameters is presented. We determine the stellar
parameters for stars with Teff higher than 2900K, with logg from
-0.24dex to 5.9dex. The typical precisions are 45K, 0.25dex, and
0.22dex, for Teff, logg, and [Fe/H], respectively, which are estimated
from duplicate observations of the same stars.
Description:
The LAMOST spectral survey provides us with a massive number of
medium- (R∼7500) and low-resolution (R∼1800) spectra, which are
collected by the innovative active reflecting Schmidt telescope
located in Xinglong Observatory, China.
After the eighth year of the regular low-resolution survey, a total of
11,214,076 low-resolution spectra are available in LAMOST DR8.
In this study, we adopt the identified M-type stars from LAMOST DR8 to
derive the stellar parameters by applying the χ2 minimization
performed by the ULySS (Koleva+ 2009A&A...501.1269K 2009A&A...501.1269K) program.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tableb1.dat 107 763136 Stellar parameters
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See also:
B/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)
B/gcvs : General Catalogue of Variable Stars (Samus+, 2007-2017)
B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2020)
III/198 : Palomar/MSU nearby star spectroscopic survey (Hawley+ 1997)
III/218 : ELODIE archive (Prugniel+, 2001)
III/232 : STELIB: A library of stellar spectra at R∼2000 (Le Borgne+, 2003)
III/284 : APOGEE-2 data from DR16 (Johnsson+, 2020)
V/156 : LAMOST DR7 catalogs (Luo+, 2019)
V/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16) (Ahumada+, 2020)
I/350 : Gaia EDR3 (Gaia Collaboration, 2020)
J/AJ/113/806 : M-Subdwarfs (Gizis 1997)
J/ApJS/152/251 : Indo-US library of coude feed stellar sp. (Valdes+, 2004)
J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)
J/MNRAS/374/664 : Stellar atmospheric param. in MILES library (Cenarro+, 2007)
J/A+A/480/91 : Gal. disk stars vertical distribution. IV. (Soubiran+, 2008)
J/A+A/531/A165 : MILES atmospheric parameters (Prugniel+, 2011)
J/other/RAA/11.924 : Atmospheric parameters for 771 stars (Wu+, 2011)
J/ApJ/753/90 : Parameters of K5 and later type Kepler stars (Mann+, 2012)
J/A+A/549/A109 : HARPS XXXI. The M-dwarf sample (Bonfils+, 2013)
J/MNRAS/443/2561 : CONCH-SHELL catalog of nearby M dwarfs (Gaidos+, 2014)
J/AJ/147/20 : Spectroscopy of 447 nearby M dwarfs (Newton+, 2014)
J/other/RAA/15.1182 : M Dwarf catalog of LAMOST DR1 (Guo+, 2015)
J/ApJ/804/64 : Empirical and model parameters of 183 M dwarfs (Mann+, 2015)
J/ApJ/808/16 : Cannon: a new approach to determine abundances (Ness+, 2015)
J/ApJS/220/16 : SpeX NIR survey of 886 nearby M dwarfs (Terrien+, 2015)
J/MNRAS/448/822 : LAMOST candidate members of star clusters (Xiang+, 2015)
J/other/RAA/15.1154 : M-giant star candidates in LAMOST DR 1 (Zhong+, 2015)
J/AJ/150/42 : Catalog of 2612 M dwarfs from LAMOST (Zhong+, 2015)
J/AJ/151/144 : ASPCAP weights for APOGEE chemical elements (Garcia+, 2016)
J/AJ/151/68 : Kepler Mission. VII. Eclipsing binaries in DR3 (Kirk+, 2016)
J/A+A/585/A64 : New atmospheric param. of MILES cool stars (Sharma+, 2016)
J/ApJ/836/5 : Abundances of LAMOST giants from APOGEE DR12 (Ho+, 2017)
J/A+A/608/A95 : GES: multi-line spectroscopic binary cand. (Merle+, 2017)
J/ApJ/836/77 : A library of high-S/N opt. sp. of FGKM stars (Yee+, 2017)
J/AJ/155/180 : Cool dwarf targets for the TESS (Muirhead+, 2018)
J/A+A/615/A6 : Photospheric parameters of CARMENES stars (Passegger+, 2018)
J/A+A/620/A180 : Stellar properties of M dwarfs (Rajpurohit+, 2018)
J/A+A/612/A49 : 324 CARMENES M dwarfs velocities (Reiners+, 2018)
J/AJ/157/63 : Radii for low-metallicity M-dwarf stars (Kesseli+, 2019)
J/A+A/625/A68 : Radii and masses of the CARMENES targets (Schweitzer+, 2019)
J/ApJS/240/31 : M-subdwarf research. I. LAMOST DR4 sp. (Zhang+, 2019)
J/ApJ/892/31 : Teff & metallicities of M dwarfs in APOGEE (Birky+, 2020)
J/AJ/159/193 : Parameters of ∼30000 LAMOST DR1 M dwarfs (Galgano+, 2020)
J/AJ/159/30 : High PM M-type stars spectroscopic obs. (Hejazi+, 2020)
J/AJ/160/253 : IR phot. of late-type dwarfs in Kepler Field (Lu+, 2020)
J/A+A/644/A68 : Abundance signature of M dwarf stars (Maldonado+, 2020)
J/ApJ/891/23 : Stellar abundances from LAMOST MRS (SPCAnet) (Wang+, 2020)
J/ApJS/246/9 : Stellar parameters of LAMOST stars using SLAM (Zhang+, 2020)
J/A+A/649/A147 : Spectroscopic parameters for 313 M dwarfs (Sarmento+, 2021)
http://ulyss.univ-lyon1.fr/ : University of Lyon Spectroscopic analysis
Software (ULySS) home page
Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- LAMOST LAMOST designation
21- 30 I10 --- ObsID [101007/824016248] Unique LAMOST spectra
identifier
32- 50 I19 --- Gaia ?=-9999 Gaia EDR3 identifier
52- 53 I2 h RAh Hour of Right Ascension (J2000)
55- 56 I2 min RAm Minute of Right Ascension (J2000)
58- 62 F5.2 s RAs Second of Right Ascension (J2000)
64 A1 --- DE- Sign of the Declination (J2000)
65- 66 I2 deg DEd Degree of Declination (J2000)
68- 69 I2 arcmin DEm Arcminute of Declination (J2000)
71- 74 F4.1 arcsec DEs Arcsecond of Declination (J2000)
76- 83 F8.2 --- SNR [0/999]?=-9999 Signal-to-Noise in r band
85- 90 F6.1 km/s RVel [-499.4/496.5] Radial velocity
92- 95 I4 K Teff [2900/5994] Effective temperature
97-101 F5.2 [cm/s2] log(g) [-0.24/5.9] log surface gravity
103-107 F5.2 [Sun] [Fe/H] [-2.8/1] Metallicity
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 02-Aug-2022