Universidad Complutense de Madrid
E-Prints Complutense

Understanding A-type supergiants - II. Atmospheric parameters and rotational velocities of galactic A-type supergiants

Impacto

Descargas

Último año



Verdugo, Eva y Talavera, A. y Gómez de Castro, Ana Inés (1999) Understanding A-type supergiants - II. Atmospheric parameters and rotational velocities of galactic A-type supergiants. Astronomy & Astrophysics, 346 (3). pp. 819-830. ISSN 0004-6361

[img] PDF
Restringido a Sólo personal autorizado del repositorio hasta 31 Diciembre 2020.

277kB

URL Oficial: http://adsabs.harvard.edu/abs/1999A&A...346..819V



Resumen

We present the second paper of a series whose aim is to perform a global study of Galactic A-supergiants. Very little work has been carried out to determine the stellar parameters of these stars. This is illustrated with a brief review of some previous works. In this paper we analyze the determination of absolute magnitudes, spectral types and atmospheric parameters using the most recent Kurucz LTE blanketed model atmospheres and we discuss the applicability of the calibrations, such as the Schmidt-Kaler's (1982) calibration. Rotation is also an important parameter in A-supergiants but their rotational velocities are poorly known. We have calculated projected rotational velocities from the Fourier analysis of the observed Mg II (4481 Angstrom) line.


Tipo de documento:Artículo
Palabras clave:Stellar temperature scale; large magellanic cloud; early-type stars; nearby galaxies; luminous stars; bolometric corrections; f-supergiants; super-giants; alpha-cygni; milky-way; stars : atmospheres; stars : fundamental parameters; stars : mass-loss; stars : supergiants
Materias:Ciencias > Matemáticas > Astronomía
Código ID:16486
Depositado:21 Sep 2012 08:39
Última Modificación:07 Feb 2014 09:30

Descargas en el último año

Sólo personal del repositorio: página de control del artículo