Astrophysical: Planetary nebulae

  • 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 C<SUB>60</SUB> Combination Bands in the Near-IR Spectrum of Tc 1
    We report the detection of a set of new near-infrared emission features between 3.5 and 5.2 μm in JWST/NIRSpec observations of Tc 1, the planetary nebula known...
  • 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...
  • Publication
    Detection of New Planetary Nebulae by IPHAS, the Hα Survey of the North Galactic Plane
    IPHAS is an ongoing Hα imaging survey of the North Galactic plane. When completed, it is expected to discover several hundred new Galactic planetary nebulae, in...
  • Publication
    Detection of the [C I] λ8727 emission line. Low-ionization structures in NGC 7009
    We report the first spatially resolved detection of the near-infrared [C I] λ8727 emission from the outer pair of low-ionization structures in the planetary...
  • Publication
    Diffuse Interstellar Bands in (Proto-) Fullerene-Rich Environments
    The recent infrared detection of fullerenes (C60 and C70) in Planetary Nebulae (PNe) and R Coronae Borealis (RCB) stars offers a beautiful opportunity for...
  • Publication
    Diffuse interstellar bands in fullerene planetary nebulae: the fullerenes - diffuse interstellar bands connection
    We present high-resolution (R ~ 15 000) VLT/UVES optical spectra of two planetary nebulae (PNe; Tc 1 and M 1-20) where C60 (and C70) fullerenes have already...