14 papers · 1 filter
IP Pegasi in outburst: Echelle spectroscopy & Modulation Doppler Tomography
C. Papadaki, H. M. J. Boffin, D. Steeghs
We analyse a unique set of time-resolved echelle spectra of the dwarf nova IP Peg, obtained at ESO's NTT with EMMI. The dataset covers the wavelength range of 4000-7500A and shows…
Photometric study of selected cataclysmic variables II. Time-series photometry of nine systems
C. Papadaki, H. M. J. Boffin, V. Stanishev +3
We present time-series photometry of nine cataclysmic variables: EI UMa, V844Her, V751 Cyg, V516 Cyg, GZ Cnc, TY Psc, V1315 Aql, ASAS J002511+1217.12, V1315 Aql and LN UMa. The obs…
Simultaneous Doppler maps of IP Peg in outburst
C. Papadaki, H. M. J. Boffin, D. Steeghs
IP Pegasi is an eclipsing dwarf nova lying above the period gap with an orbital period of 3.8h. It is the first cataclysmic variable to show evidence of spiral arms in its accretio…
Gas flow in close binary star systems
K. Oka, T. Matsuda, I. Hachisu +1
We first present a summary of our numerical work on accretion discs in close binary systems. Our recent studies on numerical simulations of the surface flow on the mass-losing star…
Time-resolved photometry of cataclysmic variables
C. Papadaki, H. M. J. Boffin, J. Cuypers +3
We present time-resolved photometry of two cataclysmic variables whose CCD photometric observations were obtained with the 1m telescope at the South African Astronomical Observator…
HD 112914 : A nearby one solar mass binary system
Henri M. J. Boffin, Dimitri Pourbaix
In paper 167 of his serie published in The Observatory, Griffin presented the spectroscopic orbit of HD 112914, a late main sequence star. He also noticed that this star, also know…