Atmospheric parameters and kinematic information for the M giants stars from LAMOST DR9

Abstract

A catalog of more than 43,000 M giant stars has been selected by Li et al. from the ninth data release of LAMOST. Using the data-driven method SLAM, we obtain the stellar parameters (Teff, logg, [M/H], [$\alpha$/M]) for all the M giant stars with uncertainties of 57 K, 0.25 dex, 0.16 dex and 0.06 dex at SNR > 100, respectively. With those stellar parameters, we constrain the absolute magnitude in K-band, which brings distance with relative uncertainties around 25% statistically. Radial velocities are also calculated by applying cross correlation on the spectra between 8000 A $\mathring{A}$ and 8950 A $\mathring{A}$ with synthetic spectra from ATLAS9, which covers the Ca II triplet. Comparison between our radial velocities and those from APOGEE DR17 and Gaia DR3 shows that our radial velocities have a system offset and dispersion around 1 and 4.6 km s${}^{-1}$, respectively. With the distances and radial velocities combining with the astrometric data from Gaia DR3, we calculate the full 6D position and velocity information, which are able to be used for further chemo-dynamic studies on the disk and substructures in the halo, especially the Sagittarius Stream.

arXiv comment21 pages, 11 figures, accepted by RAA

References in corpus (39)

• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• Estimating distances from parallaxes. V: Geometric and photogeometric distances to 1.47 billion stars in Gaia Early Data Release 3
• The Dartmouth Stellar Evolution Database
• The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
• A 3D Dust Map Based on Gaia, Pan-STARRS 1 and 2MASS
• A 2MASS All-Sky View of the Sagittarius Dwarf Galaxy: I. Morphology of the Sagittarius Core and Tidal Arms
• The First Data Release (DR1) of the LAMOST general survey
• The Ghost of Sagittarius and Lumps in the Halo of the Milky Way
• LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) The survey science plan
• The Sagittarius Dwarf Galaxy: a Model for Evolution in a Triaxial Milky Way Halo
• ULySS: A Full Spectrum Fitting Package
• Precession of the Sagittarius stream
• Deriving the stellar labels of LAMOST spectra with Stellar LAbel Machine (SLAM)
• Self-consistent Stellar Radial Velocities from LAMOST Medium-Resolution Survey (MRS) DR7
• Overview of the LAMOST survey in the first decade
• A collection of model stellar spectra for spectral types B to early-M
• SPCANet: Stellar Parameters and Chemical Abundances Network for LAMOST-II Medium Resolution Survey
• The expected performance of stellar parametrization with Gaia spectrophotometry
• The Galactic spiral structure as revealed by O- and early B-type stars
• Mapping the Milky Way with LAMOST I: Method and overview
• Chemical abundances of hydrostatic and explosive alpha-elements in Sagittarius stream stars
• ODUSSEAS: A machine learning tool to derive effective temperature and metallicity for M dwarf stars
• Exploring the pertubed Milky Way disk and the substructures of the outer disk
• Stellar parametrization of LAMOST M dwarf stars
• Mapping the Milky Way with LAMOST II: the stellar halo
• Selecting M-giants with infra-red photometry: Distances, metallicities and the Sagittarius stream
• Rotating halo traced by the K giant stars from LAMOST and Gaia
• Detecting the Sagittarius stream with LAMOST DR4 M giants \& Gaia DR2
• Value-added catalogs of M type stars in LAMOST DR5
• Exposing Sgr tidal debris behind the Galactic disk with M giants selected in WISE$\cap$2MASS
• GRACES: Gemini remote access to CFHT ESPaDOnS Spectrograph through the longest astronomical fiber ever made (Experimental phase completed.)
• The stellar parameters and elemental abundances from low-resolution spectra I: 1.2 million giants from LAMOST DR8
• Stellar Atmospheric Parameters of M-type Stars from LAMOST DR8
• SDSS/SEGUE Spectral Feature Analysis For Stellar Atmospheric Parameter Estimation
• The Space Interferometry Mission Astrometric Grid Giant-Star Survey. I. Stellar Parameters and Radial Velocity Variability
• Differential rotation of the halo traced by the K-giant stars
• Fundamental Parameters of $\sim$30,000 M dwarfs in LAMOST DR1 Using Data-driven Spectral Modeling
• The Space Interferometry Mission Astrometric Grid Giant-Star Survey. III. Basic Stellar Parameters for an Extended Sample
• New tidal debris nearby the Sagittarius leading tail from the LAMOST DR2 M giant stars

Cited by in corpus (4)

• Unveiling Galactic substructures with M Giant stars: A kinematic and chemical study based on LAMOST DR9, Gaia DR3 and APOGEE DR17
• Estimating Stellar Atmospheric Parameters and [α/Fe] for LAMOST O-M type Stars Using a Spectral Emulator
• Estimating the Atmospheric Parameters of Early-type Stars from the Chinese Space Station Telescope (CSST) Slitless Spectra Survey
• Refined M-type Star Catalog from LAMOST DR10: Measurements of Radial Velocities, $T_{\text{eff}}$, log $g$, [M/H] and [$\alpha$/M]