Astrophysical: Accretion

  • Publication
    Doppler tomography of XTE J1118+480 revealing chromospheric emission from the secondary star
    Doppler tomography of emission lines in low-mass X-ray binaries allows us to investigate the structure and variability of the accretion discs as well as...
  • Publication
    Dust in active galactic nuclei. Mid-infrared T-ReCS/Gemini spectra using the new RedCan pipeline
    Context. The unified model of active galactic nuclei (AGN) claims that the properties of AGN depend on the viewing angle of the observer with respect to a...
  • Publication
    DW Cancri: a magnetic VY Scl star with an orbital period of 86 min
    We present the first time-resolved spectroscopic study of the cataclysmic variable DW Cancri. We have determined an orbital period of 86.10 +/- 0.05 min, which...
  • Publication
    Dynamical confirmation of a stellar mass black hole in the transient X-ray dipping binary MAXI J1305-704
    MAXI J1305-704 has been proposed as a high-inclination candidate black hole X-ray binary in view of its X-ray properties and dipping behaviour during outburst...
  • Publication
    Dynamical constraints on the neutron star mass in EXO 0748-676
    We present Very Large Telescope (VLT) intermediate resolution spectroscopy of UY Vol, the optical counterpart of the low mass X-ray binary (LMXB) X-ray burster...
  • Publication
    Dynamical Evidence for a Black Hole in GX 339-4
    We present outburst spectroscopy of GX 339-4 that may reveal the motion of its elusive companion star. N III lines exhibit sharp emission components moving over...
  • Publication
    Dynamical evidence for a black hole in the X-ray transient QZ VUL (=GS 2000+25)
    We report the first spectroscopic detection of the secondary star in the X-ray transient QZ Vul (=GS 2000+25). Cross-correlation of individual spectra against K...
  • Publication
    Dynamical mass of the white dwarf in XY Ari: a test for intermediate polar X-ray spectral models
    We present a dynamical study of the eclipsing intermediate polar XY Ari based on time-resolved near-infrared spectroscopy obtained with the EMIR spectrograph on...
  • Publication
    Dynamical modelling of CXOGBS J175553.2-281633: a 10 h long orbital period cataclysmic variable
    We present modelling of the long-term optical light and radial velocity curves of the binary stellar system CXOGBS J175553.2-281633, first detected in X-rays in...