Astrophysical: Supernovae

  • Publication
    SN 1991F in NGC 3458: A peculiar type IA supernova?
    Supernova 1991F appeared in the lenticular galaxy NGC 3458 (UGC 6037). On discovery, it was classified as type I, although no subtype (i.e., Ia or Ib/c) was...
  • Publication
    SN 2002cv: a heavily obscured Type Ia supernova
    We present VRIJHK photometry, and optical and near-infrared spectroscopy, of the heavily extinguished Type Ia supernova (SN Ia) 2002cv, located in NGC 3190...
  • Publication
    SN 2012aa: A transient between Type Ibc core-collapse and superluminous supernovae
    Context. Research on supernovae (SNe) over the past decade has confirmed that there is a distinct class of events which are much more luminous (by 2 mag) than...
  • Publication
    SN 2014J at M82 - I. A middle-class Type Ia supernova by all spectroscopic metrics
    We present the intensive spectroscopic follow up of the Type Ia supernova (SN Ia) 2014J in the starburst galaxy M82. Twenty-seven optical spectra have been...
  • Publication
    SN 2020pvb: A Type IIn-P supernova with a precursor outburst
    We present photometric and spectroscopic datasets for SN 2020pvb, a Type IIn-P supernova (SN) that is similar to SNe 1994W, 2005cl, 2009kn, and 2011ht, with a...
  • Publication
    SNhunt151: an explosive event inside a dense cocoon
    SNhunt151 was initially classified as a supernova (SN) impostor (nonterminal outburst of a massive star). It exhibited a slow increase in luminosity, lasting...
  • Publication
    Spectral evolution of the He-Poor supernovae 1990U in NGC 7479 and 1991A in IC 2973
    We present the spectral evolution, from about one to six months after optical maximum, of two type Ic supernovae, 1990U in NGC 7479 and 1991A in IC 2973 (UGC...
  • Talk
    Stellar black holes at the dawn of the Universe: cosmological implications
    The so called "dark ages" of the universe began about 400.000 years after the Big Bang as matter cooled down and space became filled with neutral hydrogen for...
  • Publication
    Strong Carbon Features and a Red Early Color in the Underluminous Type Ia SN 2022xkq
    We present optical, infrared, ultraviolet, and radio observations of SN 2022xkq, an underluminous fast-declining Type Ia supernova (SN Ia) in NGC 1784 (D ≈ 31...