Bibcode
Arentsen, Anke; Prugniel, Philippe; Gonneau, Anais; Lançon, Ariane; Trager, Scott; Peletier, Reynier; Lyubenova, Mariya; Chen, Yan-Ping; Falcón Barroso, Jesús; Sánchez Blázquez, Patricia; Vazdekis, Alejandro
Referencia bibliográfica
Astronomy and Astrophysics, Volume 627, id.A138, 14 pp.
Advertised on:
7
2019
Revista
Número de citas
51
Número de citas referidas
50
Descripción
Context. The X-shooter Spectral Library (XSL) is an empirical stellar
library at medium spectral resolution covering the wavelength range from
3000 Å to 24 800 Å. 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 < 38 000 K, 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 > 6500 K), these values are 2.6%, 0.20, and 0.10 for
the three parameters.
Full Tables A.1-A.3 are only available at the CDS via anonymous ftp to
http://cdsarc.u-strasbg.fr
(ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/627/A138Based
on ESO observations from run IDs 084.B-0869(A/B), 085.B-0751(A/B) and
189.B-0925(A/B/C/D).
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