Astrophysical: Circumstellar matter

  • Publication
    On a Rapid Lithium Enrichment and Depletion of K Giant Stars
    A model scenario has recently been introduced by de la Reza and colleagues to explain the presence of very strong Li lines in the spectra of some low-mass K...
  • Publication
    On the alumina dust production in the winds of O-rich asymptotic giant branch stars
    The O-rich asymptotic giant branch (AGB) stars experience strong mass-loss with efficient dust condensation and they are major sources of dust in the...
  • Publication
    On the nature of candidate luminous blue variables in M 33
    Context. Luminous blue variables (LBVs) are a class of highly unstable stars that have been proposed to play a critical role in massive stellar evolution as...
  • Publication
    On the Presence of Metallofullerenes in Fullerene-rich Circumstellar Envelopes
    The presence of neutral C 60 fullerenes in circumstellar environments has been firmly established by astronomical observations as well as laboratory experiments...
  • Publication
    On the simultaneous optical and near-infrared variability of pre-main sequence stars
    For a complete understanding of the physical processes causing the photometric variability of pre-main sequence systems, simultaneous optical and near-IR...
  • Publication
    Optical and Infrared Observations of the Bipolar Proto-Planetary Nebula Henize 401
    Based on optical and near-infrared ground-based spectroscopy and optical and near-infrared Hubble Space Telescope (HST) images, we confirm the classification of...
  • Publication
    Optical and infrared photometry of the Type IIn SN 1998S: days 11-146
    We present contemporaneous optical and infrared (IR) photometric observations of the Type IIn SN 1998S covering the period between 11 and 146d after discovery...
  • Publication
    Planetary Nebula Candidates in a Region of M33
    Planetary nebulae (PNe) have been used to trace the chemical evolution of galaxies, not only in the Milky Way (Esteban & Peimbert 1995 and references therein)...
  • Talk
    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...