Astrophysical: Planetary nebulae

  • Publication
    Galactic planetary nebulae with precise nebular abundances as a tool to understand the evolution of asymptotic giant branch stars
    We present nucleosynthesis predictions (HeCNOCl) from asymptotic giant branch (AGB) models, with diffusive overshooting from all the convective borders, in the...
  • Publication
    Galactic planetary nebulae with Wolf-Rayet nuclei. I. Objects with [WC]-early type stars
    Spatially resolved long-slit spectrophotometric data for the planetary nebulae PB 6, NGC 2452, NGC 2867, NGC 6905 and He 2-55 are presented. Different knots...
  • Publication
    Gas physical conditions and kinematics of the giant outflow Ou4
    Context. The recently discovered bipolar outflow Ou4 has a projected size of more than one degree in the plane of the sky. It is apparently centred on the young...
  • Publication
    GLMP 621: a Binary Planetary Nebula
    The observational study of GLMP 621 have identified it as a newly-formed planetary nebula. In order to observe the system in more detail we have obtained images...
  • Publication
    Gradientes de abundancias en la nebulosa planetaria A78.
    New bidimensional spectroscopic observations of A78 allow the authors to determine the He, O, Ne, and N abundances and their variations along the nebula. A...
  • Publication
    GTC/CanariCam mid-IR imaging of the fullerene-rich planetary nebula IC 418
    The formation process(es) of fullerenes in space is still uncertain and several mechanisms have been proposed in the literature. In particular, the most...
  • Publication
    GTC/CanariCam Mid-IR Imaging of the Fullerene-rich Planetary Nebula IC 418: Searching for the Spatial Distribution of Fullerene-like Molecules
    We present seeing-limited narrow-band mid-IR GTC/CanariCam images of the spatially extended fullerene-containing planetary nebula (PN) IC 418. The narrow-band...
  • Publication
    H α fluxes and extinction distances for planetary nebulae in the IPHAS survey of the northern galactic plane
    We report H α filter photometry for 197 Northern hemisphere planetary nebulae (PNe) obtained using imaging data from the IPHAS survey. H α+[N II] fluxes were...
  • Publication
    H2 and Brγ Narrowband Imaging of Bipolar Planetary Nebulae
    We present near-IR narrowband continuum-subtracted images in the H2 2.122 μm, and Brγ 2.166 μm emission lines for a sample of 15 bipolar planetary nebulae (PNe)...