Astrofísicas: Estrellas B

  • Publicación
    On the massive star-forming capacity of molecular clouds
    Assuming that photoionization is the self-limiting process for continued star formation, we estimate the maximum number of massive (OB) stars that can form...
  • Publicación
    On the post-T-Tauri nature of late-type visual companions to B-type stars
    We report on intermediate-to-high resolution spectroscopy and standard broadband photometry of late-type visual companions to early-type stars. Our program...
  • Publicación
    On the presence of two discs in the X-ray/Be binary A 0535 + 26/HDE 245770
    The analysis of the efficiency of accretion in the X-ray binary system A 0535 + 26/HDE 245770 and of the specific angular momentum of the matter accreted during...
  • Publicación
    On the shell spectrum of 48 Librae
    Spectrograms of the variable star 48 Librae, taken near the last expected minimum, have been examined for irregularities of the shell line profiles. The...
  • Publicación
    Physical parameters of reflection nebulae in the galaxy
    Given observed equivalent widths of Mg II and Mg I absorptions due to an interstellar cloud in which a late-B star is embedded, it is shown that the basic...
  • Publicación
    Star formation in stellar systems
    The present volume on stellar formation discusses basic physical principles relevant to such processes, regions of recent star formation, galaxy formation and...
  • Publicación
    Stromgren and infrared photometry of OB candidates in the association Cygnus OB2
    The Cygnus OB2 association contains some of the most massive and most luminous O-stars in the northern hemisphere. As a first step toward studying the initial...
  • Publicación
    The visible spectra of three B stars - Pi Cet, 36 Lyn, and 134 Tau
    An identification list is presented for the visible spectra of Pi Cet (B7 V), 36 Lyn (B8 IIIp), and 134 Tau (B9 IV). Equivalent widths are measured on medium...
  • Publicación
    Time resolved spectroscopy of AM CVn
    The preliminary results of time-resolved spectroscopy of the He White Dwarf system AM CVn are presented. Spectral variations at different photometric periods...