Astrophysical: Planetary nebulae

  • Publication
    A study of extragalactic planetary nebulae populations based on spectroscopy. I. Data compilation and first findings
    We compile published spectroscopic data and [O III] magnitudes of almost 500 extragalactic planetary nebulae (PNe) in 13 galaxies of various masses and...
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    A study of the neglected Galactic H ii region NGC 2579 and its companion ESO 370-9
    Context: The Galactic H ii region NGC 2579 has stayed undeservedly unexplored due to identification problems which persisted until recently. Both NGC 2579 and...
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    A wealth of new planetary nebulae from the IPHAS survey
    We report on the current status of the search for planetary nebulae (PNe) in the IPHAS survey, the 1800 square degree H-alpha survey of the Northern Galactic...
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    A window on the efficiency of the s-process in AGB stars: chemical abundances of n-capture elements in the planetary nebula NGC 3918
    The chemical content of the planetary nebula NGC 3918 is investigated through deep, high-resolution (R˜40,000) UVES at VLT spectrophotometric data. We identify...
  • Publication
    Abell 30 - A binary central star among the born-again planetary nebulae
    Eight planetary nebulae have been identified as 'born-again', a class of object typified by knotty secondary ejecta having low masses (${\sim}10^{-4}$ M ☉) with...
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    Abell 41: nebular shaping by a binary central star?
    We present the first detailed spatio-kinematical analysis and modelling of the planetary nebula Abell 41, which is known to contain the well-studied close...
  • Publication
    Abell 41: shaping of a planetary nebula by a binary central star
    We present the first detailed spatiokinematical analysis and modelling of the planetary nebula Abell 41, which is known to contain the well-studied close-binary...
  • Publication
    Abundance gradient for 13 planetary nebulae in the Galaxy
    Via optical low-resolution long slit spectroscopy conducted at the 2.5 m INT in La Palma, He, O, N, Ne, A, and S abundances in 13 extended PN were calculated...
  • Publication
    Abundance Gradients in M33: the Use of Planetary Nebulae
    We present our observations of several planetary nebulae in the central zones of the spiral galaxy M33. We combine the abundances we derived for our objects...