Astrofísicas: Estrellas F

  • Publicación
    Observed and computed UV spectral distribution of A and F stars
    An automatic and fast procedure was implemented to determine Te and log g from the comparison of the UV S 2/68 spectra with the Kurucz models. The method has...
  • Publicación
    Oxygen abundances in F-type stars of the Hyades and the Ursa Major group
    We have derived the oxygen abundances of 50 F-type main-sequence stars, belonging to the Hyades open cluster, the Ursa Major group, and the field, using an NLTE...
  • Publicación
    Rapid photometry of the Delta Scuti variable 63 Herculis and of the F 2V star HD 155543 - Observations and analysis of the time series
    In this paper we report the results of simultaneous observations, using rapid continuous differential photometry, of the δ Scuti star 63 Her and of a normal...
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    The He I D3 5876 A line as an activity and structural indicator in F-type Hyades stars
    The first results of a study of F-type MS stars using the He I D3 absorption feature at 5876 A as an indicator of stellar activity and structure are presented...
  • Publicación
    The influence of internal gravity waves on the light elements depletion among F-type stars
    It is proposed that the Li abundances in F-type stars can be affected by the weak mixing generated by internal gravity waves since the absence of Li is so...
  • Publicación
    Use of high resolution IUE spectra of MG 2 in cool stars to probe the local interstellar medium
    It is shown that, given suitable radial velocity values for the stars and the local interstellar medium (LISM) interstellar absorption can be distinguished from...