Astrophysical: Planetary nebulae

  • Publication
    Confirmation of the link between central star binarity and extreme abundance discrepancy factors in planetary nebulae
    It has recently been noted that there seems to be a strong correlation between planetary nebulae with close binary central stars and highly enhanced...
  • Publication
    Constraining the shaping mechanism of the Red Rectangle through the spectro-polarimetry of its central star
    We carried out high-sensitivity spectro-polarimetric observations of the central star of the Red Rectangle protoplanetary nebula with the aim of constraining...
  • Publication
    CoRoT space mission. I. (Barge+, 2008)
    Raw data were filtered from outliers and residuals at the orbital period of the satellite. The orbital parameters and the radius of the planet were estimated by...
  • Publication
    Deep radio observations of (proto-) planetary nebulae
    Planetary nebulae (PNe) are known to be extreme radiation environments. However, these extreme conditions do not preclude the presence of different types of...
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    Deep survey of millimeter radio recombination lines toward the planetary nebulae IC 418 and NGC 7027
    Context. The circumstellar environments of planetary nebulae (PNe) are remarkably chemically rich astrophysical laboratories, proving useful for studies of the...
  • Publication
    Deep WFC Images of the region around NGC 7027
    We present deep images in H alpha +[NII] and [OIII] lambda 5007 of the region around NGC 7027 obtained with the wide field camera (WFC) at the Isaac Newton...
  • Publication
    Density and Excitation Mapping of M2-9
    We have acquired imaging of the bipolar outflow M2-9 in the transitions [O III] λ5007, H I λ6563, [N II] λ6584, and [S II] λλ6717, 6731. As a result, we are...
  • Publication
    Detection of a Giant Halo Around NGC 7027
    As a parallel result of an IT Project aimed at determining accurate distances to more than 30 planetary nebulae using the extinction-distance method, we report...
  • Publication
    Detection of Collimated Bipolar Outflows in the Planetary Nebula NGC 6572 Shaping Its Nebular Shell
    Highly collimated bipolar outflows have been detected in the planetary nebula NGC 6572 via ground-based optical imagery and high-resolution long-slit...