Astrophysical: Planetary nebulae

  • Publication
    Hydrogenated amorphous carbon grains as an alternative carrier of the 9-13 μm plateau feature in the fullerene planetary nebula Tc 1
    Fullerenes have been observed in several astronomical objects since the discovery of C 60 in the mid-infrared (mid-IR) spectrum of the planetary nebula (PN) Tc...
  • Publication
    IACUB - a New Echelle Spectrograph for Use at the Observatorio del Roque-De
    An uncrossed echelle spectrograph has been constructed in a collaboration between the Queen's University of Belfast and the Instituto de Astrofísica de Canarias...
  • Publication
    Identification of Near-infrared [Se iii] and [Kr vi] Emission Lines in Planetary Nebulae
    We identify [Se iii] 1.0994 μm in the planetary nebula (PN) NGC 5315 and [Kr vi] 1.2330 μm in three PNe from spectra obtained with the Folded-Port InfraRed...
  • Publication
    Imaging resources for the GTC: IPHAS
    IPHAS is a deep, fully photometric H α survey of the northern Galactic plane carried out with the Isaac Newton telescope at La Palma. The IPHAS point source Hα...
  • Publication
    Imaging resources for the GTC: the Local Group Census
    The Local Group Census is a narrowband imaging survey aimed at cataloguing the emission-line populations in the galaxies of the Local Group. Data, which were...
  • Publication
    Imaging the Elusive H-poor Gas in the High adf Planetary Nebula NGC 6778
    We present the first direct image of the high-metallicity gas component in a planetary nebula (NGC 6778), taken with the OSIRIS Blue Tunable Filter centered on...
  • News
    Impressive images of the Ring Nebula as seen by the James Webb Space Telescope
    An international team of astronomers, in which researchers from the Instituto de Astrofísica de Canarias are taking part, share the intricate and delicate...
  • Publication
    Improved non-LTE Balmer-line profiles for hot stars
    Improved non-LTE line formation calculations for hydrogen in O-stars are presented. The calculations are carried out by means of the method recently developed...
  • Publication
    Infrared astronomy
    The physics of infrared emission processes is examined, taking into account black body radiation, radiation from dust particles, thermal plasma emission...