SIMBAD references

2016AJ....152....6W - Astron. J., 152, 6-6 (2016/July-0)

Calibration of LAMOST stellar surface gravities using the Kepler asteroseismic data.

WANG L., WANG W., WU Y., ZHAO G., LI Y., LUO A., LIU C., ZHANG Y., HOU Y., WANG Y. and CAO Z.

Abstract (from CDS):

Asteroseismology is a powerful tool to precisely determine the evolutionary status and fundamental properties of stars. With the unprecedented precision and nearly continuous photometric data acquired by the NASA Kepler mission, parameters of more than 104 stars have been determined nearly consistently. However, most studies still use photometric effective temperatures (Teff) and metallicities ([Fe/H]) as inputs, which are not sufficiently accurate as suggested by previous studies. We adopted the spectroscopic Teff and [Fe/H] values based on the Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) low-resolution spectra (R ≃ 1800), and combined them with the global oscillation parameters to derive the physical parameters of a large sample of stars. Clear trends were found between Δlogg(LAMOST-seismic) and spectroscopic Teff as well as log g, which may result in an overestimation of up to 0.5 dex for the log g values of giants in the LAMOST catalog. We established empirical calibration relations for the log g values of dwarfs and giants. These results can be used for determining the precise distances to these stars based on their spectroscopic parameters.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): asteroseismology - stars: fundamental parameters - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/AJ/152/6): table3.dat>

Status at CDS:  

Simbad objects: 3060

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2020.05.29-23:03:59

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