Astrofísicas: Nebulosas planetarias

  • Publicación
    MUSE spectroscopy of planetary nebulae with high abundance discrepancies
    We present MUSE deep integral-field unit spectroscopy of three planetary nebulae (PNe) with high-abundance discrepancy factors (ADF > 20): NGC 6778, M 1-42, and...
  • Publicación
    MUSE spectroscopy of the high abundance discrepancy planetary nebula NGC 6153
    Context. The abundance discrepancy problem in planetary nebulae (PNe) has long puzzled astronomers. NGC 6153, with its high abundance discrepancy factor (ADF ~...
  • Publicación
    Narrow band survey for intragroup light in the Leo HI cloud. Constraints on the galaxy background contamination in imaging surveys for intracluster planetary nebulae
    We have observed emission line objects located in a 0.26 deg2 field in the M 96 (Leo) group, coincident with the intergalactic HI cloud. The emission line...
  • Publicación
    Nature Versus Nurture: the Influence of the Environment in the Formation of Asymmetries
    The association of a star with the different galactic components determines on a first order its velocity within the Galaxy. This stellar motion influences the...
  • Publicación
    Near infrared photometry of IRAS sources with colours like planetary nebulae. III
    We present the near infrared photometry of a new sample of 225 IRAS sources, many of them previously unidentified in the literature, selected because their far...
  • Publicación
    Near infrared survey of IRAS sources with colours like planetary nebulae. II
    Near-IR standard photometry (J, H, K, L and M bands) of 38 IRAS sources with FIR colors similar to those of known planetary nebulae is presented. They are...
  • Publicación
    Near-infrared scans of planetary nebulae
    In the present results from a program of near-IR scanning of planetary nebulae, the observed flux is in most cases dominated by free-free emission. In three of...
  • Publicación
    Near-infrared survey of IRAS sources with colours like planetary nebulae
    Near-IR photometry of 38 objects associated with unidentified IRAS PSC sources, which have colors in the FIR similar to those of planetary nebulae are presented...
  • Publicación
    Near-IR spectroscopy of planetary nebulae precursors
    We present near-IR spectroscopy of a sample of 30 IRAS sources recently identified as late AGB stars, post-AGB stars or early PNe. The spectra obtained are...