Astrofísicas: Evolución estelar

  • Publicación
    PHL 932 - Another non-post-AGB central star of planetary nebula
    The very high surface gravity and low temperature of PHL 932, a hot subluminous star surrounded by a planetary nebula, imply that it cannot be a post-AGB star...
  • Publicación
    Physical parameters of the intermediate age open cluster IC 1311: Clues for the theory of stellar evolution
    The results of a UBVR photometric study in the field of the open cluster IC 1311 are presented. A comparison with previously published results on NGC 7044...
  • Charla
    PLANETARY PIECES: PUTING THE CLUES TOGETHER USING WHITE DWARFS
    Planetary systems have been found systematically orbiting main sequence stars and red giants. But the detection of planets per se during the white dwarf phase...
  • Charla
    Populations of rotating stars
    We will start by recalling the effects of rotation on stellar evolution and briefly explain its implementation in a stellar evolution code. We will present a...
  • Publicación
    Position-dependent infrared spectroscopy of M82 - 100,000 Orion nebulae?
    It is reported that 8-13-micron spectra have been obtained at several positions across the extended emission region of M82. No major differences among the...
  • Publicación
    Pre-main sequence lithium burning. 1: Weak T Tauri stars
    We report high-resolution spectroscopic observations for a sample of 38 T Tauri stars (TTS), complemented by UBVRI photometry of 13 TTS, and CCD VRI photometry...
  • Charla
    Progenitors of recent core-collapse supernovae
    Supernovae are at the heart of some of the most important problems of modern astronomy. To fully understand their importance and to enable their use as probes...
  • Publicación
    Pulsation in moderate rotating delta Scuti stars: The case of BN and BU CANCRI
    The results reported in this paper concern two delta Scuties in the Praesepe cluster, namely BN Cnc and BU Cnc, observed during the 1992 STEPHI 4 campaign. Five...
  • Publicación
    Quantitative spectroscopy of O-stars in the Magellanic Clouds. I - The young open cluster NGC 346 in the SMC
    Results are presented on a non-LTE analysis of high-resolution Cassegrain echelle CCD spectra of the four most luminous stars in the NGC 346 cluster in the SMC...