TY - JOUR
T1 - Distances, extinctions, and stellar parameters for stars in SkyMapper DR3
AU - Lin, Jane
AU - Casagrande, Luca
AU - Asplund, Martin
N1 - Publisher Copyright:
© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
PY - 2022/2/1
Y1 - 2022/2/1
N2 - We present a Bayesian isochrone fitting machinery to derive distances, extinctions, and stellar parameters (Teff, log g, and rm [Fe/H]) for stars in the SkyMapper data release 3 (DR3) survey. We complement the latter with photometry from Gaia, 2MASS, and AllWISE, in addition to priors on parallaxes and interstellar extinction. We find our results to be in agreement with smaller samples of literature values derived using spectroscopic/photometric method, with typical uncertainties of order 130 K in effective temperature and 0.2 dex in surface gravity and metallicity. We demonstrate the quality of our stellar parameters by benchmarking our results against various spectroscopic surveys. We highlight the potential that SkyMapper bears for stellar population studies showing how we are able to clearly differentiate metallicities along the Gaia red (∼-0.4 dex) and blue (∼-1.1 dex) sequences using both dwarf and giant stars.
AB - We present a Bayesian isochrone fitting machinery to derive distances, extinctions, and stellar parameters (Teff, log g, and rm [Fe/H]) for stars in the SkyMapper data release 3 (DR3) survey. We complement the latter with photometry from Gaia, 2MASS, and AllWISE, in addition to priors on parallaxes and interstellar extinction. We find our results to be in agreement with smaller samples of literature values derived using spectroscopic/photometric method, with typical uncertainties of order 130 K in effective temperature and 0.2 dex in surface gravity and metallicity. We demonstrate the quality of our stellar parameters by benchmarking our results against various spectroscopic surveys. We highlight the potential that SkyMapper bears for stellar population studies showing how we are able to clearly differentiate metallicities along the Gaia red (∼-0.4 dex) and blue (∼-1.1 dex) sequences using both dwarf and giant stars.
KW - catalogues
KW - stars: general
UR - http://www.scopus.com/inward/record.url?scp=85126680525&partnerID=8YFLogxK
U2 - 10.1093/mnras/stab3326
DO - 10.1093/mnras/stab3326
M3 - Article
SN - 0035-8711
VL - 510
SP - 433
EP - 444
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 1
ER -