Stellar Parameterization of LAMOST M Dwarf Stars
Li, Jiadong ; Liu, Chao ; Zhang, Bo ; Tian, Hao ; Qiu, Dan ; Tian, Haijun
The M dwarf stars are the most common stars in the Galaxy, dominating the population of the Galaxy at faint magnitudes. Precise and accurate stellar parameters for M dwarfs are of crucial importance for many studies. However, the atmospheric parameters of M dwarf stars are difficult to determine. In this paper, we present a catalog of the spectroscopic stellar parameters (Teff and [M/H]) of ∼300,000 M dwarf stars observed by both LAMOST and Gaia using the Stellar LAbel Machine (SLAM). We train a SLAM model using LAMOST spectra with APOGEE Data Release 16 labels with 2800 K < Teff < 4500K and −2 dex < [M/H] < 0.5 dex. The SLAM Teff is in agreement to within ∼50 K compared to the previous study determined by APOGEE observations, and the SLAM [M/H] agrees within 0.12 dex compared to the APOGEE observation. We also set up a SLAM model trained by the BT-Settl atmospheric model with random uncertainties (in cross validation) to 60 K and agreeing within ∼90 K compared to previous studies.
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Paper Information
Paper Title:
Stellar Parameterization of LAMOST M Dwarf Stars
Publication:
The Astrophysical Journal Supplement Series
Bibcode:
2021ApJS..253...45L
DOI:
10.3847/1538-4365/abe1c1
Identifiers
DOI:
10.12149/101070
VO Identifier:
ivo://China-VO/paperdata/101070
Publication Date:
2021-08-31
Citation Guidelines
Li, Jiadong et al. 2021. Stellar Parameterization of LAMOST M Dwarf Stars. Version 1.0. https://doi.org/10.12149/101070
@misc{10.12149/101070,
doi = {10.12149/101070},
url = {https://doi.org/10.12149/101070},
author = {Li, Jiadong},
title = {Stellar Parameterization of LAMOST M Dwarf Stars},
version = {1.0},
publisher = {Nataional Astronomical Data Center of China},
year= {2021}
}
Versions
Version 1.0 (current)
2021-08-31
Main
This DOI represents all versions, and will always resolve to the latest one.
2021-08-31