J/ApJS/266/4 LAMOST DR9 M-giant stars value-added cat. (Li+, 2023)
Value-added catalog of M-giant stars in LAMOST DR9.
Li J., Long L., Zhong J., Tang L., Zhang Bo, Qin S., Chen Y., Yan Z.,
Chen Li, Xue X.-X., Hou J., Shi J.-R.
<Astrophys. J. Suppl. Ser., 266, 4 (2023)>
=2023ApJS..266....4L 2023ApJS..266....4L
ADC_Keywords: Stars, giant; Stars, M-type; Radial velocities; Spectral types;
Photometry, infrared; Optical; Stars, distances; Space velocities
Keywords: M giant stars ; Milky Way disk ; Catalogs
Abstract:
In this work, we update the catalog of M-giant stars from the
low-resolution spectra of the Large Sky Area Multi-Object Fiber
Spectroscopic Telescope (LAMOST) Data Release 9. There are 58076 M
giants identified from the classification pipeline with seven
temperature subtypes from M0 to M6. The 2471 misclassified non-M-giant
stars are white dwarf binaries, early types, and M dwarfs. And the
contamination rate is 4.2% in the M-giants sample. A total of
372 carbon stars were identified by CaH spectral indices, and were
further confirmed by the LAMOST spectra. We update the correlation
between the (W1-W2)0 color and [M/H] from APOGEE DR17. We calculate
the radial velocities of all M giants by applying cross-correlation to
the spectra between 8000 and 8950Å with synthetic spectra from
ATLAS9. Taking star distances less than 4kpc from Gaia EDR3 as the
standard, we refitted the photometric distance relation of M giants.
And based on our M-giant stars, we select a group of Sagittarius
stream members, whose sky and 3D velocity distributions are well
consistent with K-giant Saggitarius stream members found in
Yang+ (2019ApJ...886..154Y 2019ApJ...886..154Y). With our M giants, we find that the disk
is asymmetric out to R=25kpc, which is 5kpc further out than detected
using K giants.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 374 58076 The M-giant LAMOST DR9 value-added catalog
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See also:
III/198 : Palomar/MSU nearby star spectroscopic survey (Hawley+ 1997)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
V/156 : LAMOST DR7 catalogs (Luo+, 2019)
I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
J/ApJS/105/419 : Spectral Atlas of Carbon Stars (Barnbaum+ 1996)
J/AJ/128/1177 : Galactic stellar abundances (Venn+, 2004)
J/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)
J/AJ/147/76 : Phot. of M giant cand. in the Milky Way (Bochanski+, 2014)
J/ApJ/783/130 : Parallaxes of high mass star forming regions (Reid+, 2014)
J/ApJ/793/62 : Triangulum-Andromeda stellar properties (Sheffield+, 2014)
J/other/RAA/15.1671 : New carbon stars from LAMOST survey (Si+, 2015)
J/AJ/150/42 : Catalog of 2612 M dwarfs from LAMOST (Zhong+, 2015)
J/other/RAA/15.1154 : M-giant star candidates in LAMOST DR 1 (Zhong+, 2015)
J/ApJS/226/1 : Carbon stars from LAMOST DR2 data (Ji+, 2016)
J/ApJ/823/59 : WISE and 2MASS photometry of M giant stars (Li+, 2016)
J/ApJS/234/31 : Carbon stars from LAMOST using machine learning (Li+, 2018)
J/ApJ/874/138 : Gaia and LAMOST DR4 M giant members of Sgr stream (Li+, 2019)
J/ApJ/886/154 : Sgr stream K- & M-giants and BHB stars (Yang+, 2019)
J/ApJS/244/8 : M-type stars in LAMOST DR5 (Zhong+, 2019)
J/A+A/633/A135 : Solar neighbourhood carbon stars properties (Abia+, 2020)
J/ApJS/246/9 : Stellar parameters of LAMOST stars using SLAM (Zhang+, 2020)
J/ApJ/910/46 : Gal. anticenter substructure stars from LAMOST (Li+, 2021)
J/A+A/664/A45 : Characterisation of Galactic carbon stars (Abia+, 2022)
J/ApJS/260/45 : Stellar param. of M-type stars from LAMOST DR8 (Ding+, 2022)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 49 A49 --- Filename Object's filename from LAMOST DR9
51- 70 A20 --- planid Object's planid from LAMOST DR9
72- 80 I9 --- obsid [106022/914315100] Object's obsid from LAMOST
DR9
82- 91 F10.6 deg RAdeg Object's right ascension in LAMOST DR9 (J2000)
(ra)
93- 102 F10.6 deg DEdeg [-9.54/77] Object's declination in LAMOST DR9
(J2000) (dec)
104- 113 F10.6 --- CaH2 [-44.5/72.6]?=- CaH2 spectral index of the
LAMOST spectrum
115- 124 F10.6 --- CaH3 [-62.1/19.1]?=- CaH3 spectral index of the
LAMOST spectrum
126- 135 F10.6 --- TiO5 [-65.5/29.7]?=- TiO5 spectral index of the
LAMOST spectrum
137- 148 F12.6 km/s RV [-1220/1602]?=- Radial velocity measured by
the laspec algorithm (laspec_rv)
150- 159 F10.6 km/s e_RV [0.01/140]?=- Radial velocity error measured
by the laspec algorithm (laspecrverr)
161- 171 F11.6 --- sn [-1.92/760] Mean S/N in the LAMOST spectrum
173- 177 A5 --- SpT Spectral subtype classified by the
template-fitting algorithm (spty)
179- 186 F8.6 mag E(B-V) [0.0009/2.4]?=- Reddening from the 3D dust
map (ebv)
188- 197 F10.6 mag GMAG [-7.5/15.5]?=- G-band absolute magnitude from
Gaia EDR3 (MG)
199- 206 F8.5 mag Gmag0 [4.2/21.5]?=- Dereddened G-band magnitude
from Gaia EDR3
208- 215 F8.5 mag Gbp0 [5.8/21.5]?=- Dereddened BP-band magnitude
from Gaia EDR3
217- 224 F8.5 mag Grp0 [3.7/20.2]?=- Dereddened RP-band magnitude
from Gaia EDR3
226- 233 F8.5 mag Jmag0 [1.6/17.6]?=- Dereddened J-band magnitude
from 2MASS (J0)
235- 242 F8.5 mag Hmag0 [0.7/16.7]?=- Dereddened H-band magnitude
from 2MASS (H0)
244- 252 F9.6 mag Ksmag0 [0.4/17.2]?=- Dereddened Ks-band magnitude
from 2MASS (Ks0)
254- 262 F9.6 mag W1mag0 [0.4/17]?=- Dereddened W1-band (3.4um)
magnitude from WISE (W1_0)
264- 272 F9.6 mag W2mag0 [0.3/17]?=- Dereddened W2-band (4.6um)
magnitude from WISE (W2_0)
274- 283 F10.6 kpc Dist [0.017/216]?=- Distance calculated by the
M-giant color-absolute-magnitude relation
(Dist_photo)
285- 296 F12.6 --- [M/H] [-6567/25.4]?=- Estimated photometric
metallicity of M giants
298- 308 F11.6 kpc X [-162.3/55.6]?=- Galactocentric coordinate
points to the direction opposite to that of
the Sun
310- 320 F11.6 kpc Y [-40.7/133.1]?=- Galactocentric coordinate
points to the direction of Galactic rotation
322- 332 F11.6 kpc Z [-113/110.4]?=- Galactocentric coordinate
points toward the north Galactic pole
334- 345 F12.6 km/s U [-2667/2527]?=- Galactic space velocity along
the X-axis
347- 358 F12.6 km/s V [-2440/2997]?=- Galactic space velocity along
the Y-axis
360- 371 F12.6 km/s W [-1105/650]?=- Galactic space velocity along
the Z-axis
373- 374 A2 --- Cl Label of subsamples (SFLAG) (1)
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Note (1): Code as follows:
gm = Confirmed gM-type stars (44036 occurrences)
dm = Confirmed dM-type stars (857 occurrences)
n = Non M-type stars (1599 occurrences)
c = carbon stars (372 occurrences)
w = White dwarf binaries (15 occurrences)
u = Unconfirmed M-type stars; lack of Gaia data (11197 occurrences)
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 21-Jul-2023