Publication type: Refereed

  • Publication
    The optical warp of NGC 5907
    The optical warps of NGC 5907 is studied by means of CCD photometry, for the U and I filters, as well as for a narrow band filter centered at H-alpha. The...
  • Publication
    The Optical/IR Counterpart of the 1998 July 3 Gamma-Ray Burst and Its Evolution
    We imaged the X-ray error box of GRB 980703, beginning 22.5 hr after the gamma-ray event, in both the optical R and near-infrared H bands. A fading optical/IR...
  • Publication
    The Orbit and Companion of PSR J1622-0315: Variable Asymmetry and a Massive Neutron Star
    The companion to PSR J1622-0315, one of the most compact known redback millisecond pulsars, shows extremely low irradiation despite its short orbital period. We...
  • Publication
    The Orbit and Origin of the Ultra-faint Dwarf Galaxy Segue 1
    We present the first proper motion measurement for an ultra-faint dwarf spheroidal galaxy, Segue 1, using data from the Sloan Digital Sky Survey (SDSS) and the...
  • Publication
    The orbit of the close spectroscopic binary varepsilon Lup and the intrinsic variability of its early B-type components
    We subjected 106 new high-resolution spectra of the double-lined spectroscopic close binary varepsilon Lup, obtained in a time-span of 17 days from two...
  • Publication
    The orbital period of CY UMa
    We present intermediate resolution spectroscopy of the dwarf nova CY UMa in quiescence. From the radial velocities of the Hα emission, we derive an orbital...
  • Publication
    The orbital period of the recurrent nova V2487 Oph revealed
    We present the first reliable determination of the orbital period of the recurrent nova V2487 Oph (Nova Oph 1998). We derived a value of 0.753 ± 0.016 d (18.1 ±...
  • Publication
    The orbital period of the recurrent X-ray transient in Terzan 6
    Four or five new outbursts were detected of the bright X-ray transient GRS 1747-312 in the globular cluster Terzan 6 between 1996 and 1999, through monitoring...
  • Publication
    The orbital period of V458 Vulpeculae, a post-double common-envelope nova
    We present time-resolved optical spectroscopy of V458 Vulpeculae (Nova Vul 2007 No. 1) spread over a period of 15 months starting 301d after its discovery. Our...