SIMBAD references

2019A&A...627A.138A - Astronomy and Astrophysics, volume 627A, 138-138 (2019/7-1)

Stellar atmospheric parameters for 754 spectra from the X-shooter Spectral Library.

ARENTSEN A., PRUGNIEL P., GONNEAU A., LANCON A., TRAGER S., PELETIER R., LYUBENOVA M., CHEN Y.-P., FALCON BARROSO J., SANCHEZ BLAZQUEZ P. and VAZDEKIS A.

Abstract (from CDS):

Context. The X-shooter Spectral Library (XSL) is an empirical stellar library at medium spectral resolution covering the wavelength range from 3000Å to 24 800Å. This library aims to provide a benchmark for stellar population studies. Aims. In this work, we present a uniform set of stellar atmospheric parameters, effective temperatures, surface gravities, and iron abundances for 754 spectra of 616 XSL stars. Methods. We used the full-spectrum fitting package ULySS with the empirical MILES library as reference to fit the ultraviolet-blue (UVB) and visible (VIS) spectra. We tested the internal consistency and we compared our results with compilations from the literature. Results. The stars cover a range of effective temperature 2900<Teff<38000K, surface gravity 0<logg<5.7, and iron abundance -2.5<[Fe/H]<+1.0, with a couple of stars extending down to [Fe/H]=-3.9. The precisions of the measurements for the G- and K-type stars are 0.9%, 0.14, and 0.06 in Teff, logg, and [Fe/H], respectively. For the cool giants with logg<1, the precisions are 2.1%, 0.21, and 0.22, and for the other cool stars these values are 1%, 0.14, and 0.10. For the hotter stars (Teff>6500K), these values are 2.6%, 0.20, and 0.10 for the three parameters.

Abstract Copyright: © ESO 2019

Journal keyword(s): atlases - stars: fundamental parameters - methods: data analysis - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/A+A/627/A138): tablea1.dat tablea2.dat tablea3.dat>

Status in Simbad:  could be processed

Simbad objects: 31

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2019.11.20-01:30:16

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