Person:
Gorgas García, Francisco Javier

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First Name
Francisco Javier
Last Name
Gorgas García
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Físicas
Department
Física de la Tierra y Astrofísica
Area
Astronomía y Astrofísica
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  • Publication
    An extension of the MILES library with derived T-eff, log g, [Fe/H], and [α/Fe]
    (Oxford University Press., 2021-08) García Pérez, A.E.; Sánchez Blázquez, P.; Vazdekis, A.; Allende Prieto, C.; Milone, A. de C.; Sansom, A.E.; Gorgas García, Francisco Javier; Flacon-Barroso, J.; Martín Navarro, I.; Cacho, R.
    Extragalactic astronomy and stellar astrophysics are intrinsically related. In fact, the determination of important galaxy properties such as stellar masses, star formation histories, or chemical abundances relies on the ability to model their stellar populations. One important ingredient of these models is stellar libraries. Empirical libraries must have a good coverage of T_(eff), [Z/H], and surface gravity, and have these parameters reliably determined. MILES is one of the most widely used empirical libraries. Here, we present an extension of this library with 205 new stars especially selected to cover important regions of the parameter space, including metal-poor stars down to [Fe/H] ∼ −1.0. We describe the observations and data reductions as well as a new determination of the stellar parameters, including [α/Fe] ratio. The new MILES library contains 1070 stars with homogeneous and reliable determination of [Fe/H], T_(eff), log g, and [α/Fe] ratio.