Astrofísicas: Novae

  • Publicación
    Unveiling the white dwarf in the eclipsing polar HU Aquarii
    We present an analysis of high-speed u- and r-band photometry of the eclipsing polar HU Aqr that was obtained with ULTRACAM mounted on the VLT. The observations...
  • Publicación
    V348 Puppis: a new SW Sex star in the period gap
    We present time-resolved optical spectroscopy and photometry of the nova-like cataclysmic variable V348 Puppis. The system displays the same spectroscopic...
  • Publicación
    V458 Vul (Nova Vul 2007) becomes a highly-variable supersoft X-ray source
    Swift X-ray Telescope (XRT) monitoring observations of V458 Vul (Nova Vul 2007, S. Nakano, IAUC 8861) have found it to be entering a new phase characterised by...
  • Publicación
    V533 Herculis: the second SW Sex old nova displaying emission-line flaring
    We present high-time-resolution spectroscopy of the non-eclipsing old nova V533 Herculis (N Her 1963). It is the second nova remnant affected by the `SW Sex...
  • Publicación
    V795 Her: an SW Sex star in the period gap?
    We present optical photometry and spectroscopy of the nova-like variable V795 Her. The emission lines exhibit an extremely complex structure consisting of...
  • Publicación
    V838 Mon and the new class of stars erupting into cool supergiants (SECS)
    V838 Mon has undergone one of the most mysterious stellar outbursts on record. The spectrum at maximum closely resembled a cool AGB star, evolving toward cooler...
  • Publicación
    Very high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopes
    Context. In the last five years the Fermi Large Area Telescope (LAT) instrument detected GeV γ-ray emission from five novae. The GeV emission can be interpreted...
  • Publicación
    VLT/FORS spectroscopy of faint cataclysmic variables discovered by the Sloan Digital Sky Survey
    We present medium-resolution VLT/FORS2 spectroscopy of six cataclysmic variables (CVs) discovered by the Sloan Digital Sky Survey (SDSS). We determine orbital...
  • Publicación
    When the disc's away, the stars will play: dynamical masses in the nova-like variable KR Aur with a pinch of accretion
    We obtained time-resolved optical photometry and spectroscopy of the nova-like variable KR Aurigae in the low state. The spectrum reveals a DAB white dwarf (WD)...