Stellar atmospheric parameters for 754 spectra from the X-shooter Spectral Library
| Autor: | Mariya Lyubenova, Philippe Prugniel, Anke Arentsen, Yanping Chen, A. Vazdekis, Ariane Lançon, Jesus Falcon Barroso, Scott Trager, Patricia Sánchez Blázquez, Anais Gonneau, Reynier Peletier |
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| Přispěvatelé: | Observatoire astronomique de Strasbourg (ObAS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), Astronomy |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Stellar population
FOS: Physical sciences Context (language use) Astrophysics 01 natural sciences Spectral line Internal consistency 0103 physical sciences Range (statistics) Spectral resolution 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) ComputingMilieux_MISCELLANEOUS Physics 010308 nuclear & particles physics Astronomy and Astrophysics Effective temperature Astrophysics - Astrophysics of Galaxies methods: data analysis atlases Stars Astrophysics - Solar and Stellar Astrophysics 13. Climate action Space and Planetary Science [SDU]Sciences of the Universe [physics] Astrophysics of Galaxies (astro-ph.GA) stars: fundamental parameters techniques: spectroscopic |
| Zdroj: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 627, pp.A138. ⟨10.1051/0004-6361/201834273⟩ Astronomy & astrophysics, 627:A138. EDP Sciences |
| ISSN: | 0004-6361 |
| DOI: | 10.1051/0004-6361/201834273⟩ |
| Popis: | The X-shooter Spectral Library (XSL) is an empirical stellar library at medium spectral resolution covering the wavelength range from 3000 ��to 24 800 ��. This library aims to provide a benchmark for stellar population studies. 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. 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. The stars cover a range of effective temperature 2900 < Teff < 38 000 K, surface gravity 0 < log g < 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, log g, and [Fe/H], respectively. For the cool giants with log g < 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. 15 pages, 12 figures, 3 tables, published in A&A |
| Databáze: | OpenAIRE |
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