Astrofísicas: Nebulosas planetarias

  • Publicación
    The High-Excitation Planetary Nebula NGC 246: Optical and Near-Ultraviolet Observations and Two-dimensional Numerical Models
    We have imaged the planetary nebula (PN) NGC 246 in the near-ultraviolet wavelengths [Ne V] 342.6 nm, the Bowen fluorescence line of O III at 344.4 nm, and a...
  • Publicación
    The high-velocity outflow in the proto-planetary nebula Hen 3-1475
    The proto-planetary nebula Hen 3-1475 shows a remarkable highly collimated optical jet with an S-shaped string of three pairs of knots and extremely high...
  • Publicación
    The IAC morphological catalog of northern Galactic planetary nebulae
    Not Available
  • Publicación
    The Illumination and Growth of CRL 2688: An Analysis of New and Archival Hubble Space Telescope Observations
    We present four-color images of CRL 2688 obtained in 2009 using the Wide-Field Camera 3 on Hubble Space Telescope. The F606W image is compared with archival...
  • Publicación
    The impact of strong recombination on temperature determination in planetary nebulae
    The long-standing difference in chemical abundances determined from optical recombination lines and collisionally excited lines raises questions about our...
  • Publicación
    The impact of strong recombination on temperature determination in planetary nebulae
    The long-standing difference in chemical abundances determined from optical recombination lines and collisionally excited lines raises questions about our...
  • Publicación
    The Intergalactic Stellar Population from Mergers of Elliptical Galaxies with Dark Matter Halos
    We present simulations of dry-merger encounters between pairs of elliptical galaxies with dark matter halos. The aim of these simulations is to study the...
  • Publicación
    The ionised and molecular mass of post-common-envelope planetary nebulae. The missing mass problem
    Context. Most planetary nebulae (PNe) show beautiful, axisymmetric morphologies despite their progenitor stars being essentially spherical. Close binarity is...
  • Publicación
    The iron abundance in four planetary nebulae
    We have observed the high excitation planetary nebulae NGC 7027, NGC 6543 and the low excitation planetaries Hu 2-1 and Cn 3-1 in the optical & near IR with the...