Astrophysical: Planetary nebulae

  • Publication
    The edge of the M 87 halo and the kinematics of the diffuse light in the Virgo cluster core
    Aims: We study the kinematics and dynamics of the extreme outer halo of M 87, the central galaxy in the Virgo cluster, and its transition to the intracluster...
  • Publication
    The effect of temperature fluctuations on the determination of the carbon abundance of planetary nebulae.
    By combining the C III λλ1906+1909 with the C II λ4267 line intensities it is possible to determine T(C++); this temperature is, in general, considerably...
  • Publication
    The evolution of M 2-9 from 2000 to 2010
    Context. Understanding the formation of collimated outflows is one of the most debated and controversial topics in the study of the late stages of stellar...
  • Publication
    The Evolving Morphology of the Bipolar Nebula M2-9
    The planetary nebula M2-9 has drastically changed its shape since its discovery by Minkwoski. Although the outline of the nebula seems to be stationary, most of...
  • Publication
    The Formation of Fullerenes: Clues from New C60, C70, and (Possible) Planar C24 Detections in Magellanic Cloud Planetary Nebulae
    We present 10 new Spitzer detections of fullerenes in Magellanic Cloud Planetary Nebulae, including the first extragalactic detections of the C70 molecule...
  • Publication
    The Fornax 3D project: PNe populations and stellar metallicity in edge-on galaxies
    Context. Extragalactic planetary nebulae (PNe) are useful distance indicators and are often used to trace the dark-matter content in external galaxies. At the...
  • Publication
    The Fornax3D project: Planetary nebulae catalogue and independent distance measurements to Fornax cluster galaxies
    Extragalactic planetary nebulae (PNe) offer a way to determine the distance to their host galaxies thanks to the nearly universal shape of the planetary nebulae...
  • Publication
    The halos of NGC 6543 and NGC 6826.
    Not Available
  • Publication
    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...