Astrophysical: Accretion

  • Publication
    The pre-main sequence spectroscopic binary UZ Tau East: Improved orbital parameters and accretion phase dependence
    We present radial-velocity measurements obtained using high- and intermediate-resolution spectroscopic observations of the classical T Tauri star UZ Tau East...
  • Publication
    The puzzling case of the accreting millisecond X-ray pulsar IGR J00291+5934: flaring optical emission during quiescence
    We present an optical (gri) study during quiescence of the accreting millisecond X-ray pulsar IGR J00291+5934 performed with the 10.4 m Gran Telescopio Canarias...
  • Publication
    The puzzling orbital period evolution of the LMXB AX J1745.6-2901
    The orbital period evolution of X-ray binaries provides fundamental clues to understanding mechanisms of angular momentum transfer and loss in these systems. We...
  • Publication
    The quiescent spectral energy distribution of V404 Cyg
    We present a multiwavelength study of the black hole X-ray binary V404 Cyg in quiescence, focusing upon the spectral energy distribution (SED). Radio, optical...
  • Publication
    The Return of the Bursts: Thermonuclear Flashes from Circinus X-1
    We report the detection of 15 X-ray bursts with RXTE and Swift observations of the peculiar X-ray binary Circinus X-1 (Cir X-1) during its 2010 May X-ray re...
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    The return of the spin period in DW Cnc and evidence of new high state outbursts
    DW Cnc is an intermediate polar which has previously been observed in both high and low states. Observations of the high state of DW Cnc have previously...
  • Publication
    The Role of the Accretion Disk, Dust, and Jets in the IR Emission of Low-luminosity Active Galactic Nuclei
    We use recent high-resolution infrared (IR; 1-20 μm) photometry to examine the origin of the IR emission in low-luminosity active galactic nuclei (LLAGN). The...
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    The structure of BB Doradus in quiescence
    Spectroscopic observations during a low state of BB Dor reveal a complex emission distribution. Irradiation by the white dwarf as well as magnetic fields of the...
  • Publication
    The supergiant optical counterpart of ULX P13 in NGC 7793
    We have identified the optical counterpart of the ULX source P13 in the nearby spiral galaxy NGC 7793. The object is a V ˜ 20.5 mag star, ten times brighter...