Astrofísicas: Nebulosas planetarias

  • Publicación
    Multiwavelength Imaging and Long-Slit Spectroscopy of the Planetary Nebula NGC 6884: The Discovery of a Fast Precessing, Bipolar Collimated Outflow
    We present Hα, [N II] lambda6583, [O III] lambda5007 ground-based images, Hubble Space Telescope (HST) (V band) archival images, VLA-A 3.6 cm continuum data...
  • Publicación
    MUSE crowded field 3D spectroscopy in NGC 300. I. First results from central fields
    Aims: As a new approach to the study of resolved stellar populations in nearby galaxies, our goal is to demonstrate with a pilot study in NGC 300 that integral...
  • 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...