A Catalog of Distance Determinations for the LAMOST DR8 K Giants in the Galactic Halo
نویسندگان
چکیده
We present a catalog of distances for 19544 K giants drawn from LAMOST DR8. Most them are located in the halo Milky Way up to ~120~kpc. There 15% without SDSS photometry, which we supplements with Pan-STARRS1 (PS1) photometry calibrated photometric system. The possible contamination red clumps/horizontal branch removed according metallicities and colors before distance determination. Combining spectroscopic SDSS/PS1 estimate absolute magnitudes $r-$band, moduli, corresponding uncertainties through an Bayesian approach devised by Xue et al. (2014) SEGUE K-giants. typical precision is about 11%. stars lie region 4-126 kpc Galactic center, 6, 320 beyond 20 273 50 kpc, forming largest sample distant tracers so far.
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2023
ISSN: ['1538-3881', '0004-6256']
DOI: https://doi.org/10.3847/1538-3881/acc9bb