Astrophysical: Planetary nebulae

  • Publication
    The Local Group Census: Planetary nebulae in IC 10, Leo A and Sextans A
    In the framework of our narrow-band survey of the Local Group galaxies, we present the results of the search for planetary nebulae (PNe) in the dwarf irregular...
  • Publication
    The Local Group Census: Planetary nebulae in Sextans B
    Five planetary nebulae (PNe) have been discovered in the nearby dwarf irregular galaxy. Emission line images were obtained using the Wide Field Camera of the 2...
  • Publication
    The Local Group Census: planetary nebulae in the spheroidal galaxies NGC 147, NGC 185 and NGC 205
    In the framework of our narrow-band survey of Local Group galaxies, we present the results of the search for planetary nebulae (PNe) in three spheroidal...
  • Publication
    The Local Group Census: searching for planetary nebulae in IC 1613, WLM and GR8
    In the framework of the Local Group Census (LGC), a survey of the Local Group (LG) galaxies above Dec =-30° aimed at surveying the populations that have strong...
  • Publication
    The long-period binary central stars of the planetary nebulae NGC 1514 and LoTr 5
    The importance of long-period binaries for the formation and evolution of planetary nebulae is still rather poorly understood, which in part is due to the lack...
  • Publication
    The low-excitation structures of planetary nebulae
    The low excitation properties of the planetary nebula (PN) NGC 6720 are known to be unusual, and to imply large ring/core emission ratios. We point out that...
  • Publication
    The mixed chemistry phenomenon in Galactic Bulge PNe
    Aims: We investigate the dual-dust chemistry phenomenon in planetary nebulae (PNe) and discuss reasons for its occurrence, by analyzing Spitzer/IRS spectra of a...
  • Publication
    The Morpho-kinematics of Planetary Nebulae with Binary Central Stars
    It is now clear that a binary formation pathway is responsible for a significant fraction of planetary nebulae, and this increased sample of known binaries...
  • Publication
    The multiple-shell structure of the planetary nebula NGC 6751
    An intriguing bipolar mass outflow and a faint envelope were detected spectroscopically in the planetary nebula NGC 6751 by Gieseking and Solf (1986). To study...