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RAT J1953+1859: a dwarf nova discovered through high amplitude QPOs in quiescence
(2009)
We report the discovery of an accreting binary, RAT J1953+1859, made during the RApid Temporal Survey (RATS) on the Isaac Newton Telescope. It showed high amplitude (0.3 mag) quasi-periodic oscillations on a time-scale of ...
A survey for post-common-envelope binary stars using GALEX and SDSS photometry
(2009)
We report the first results of our programme to obtain multi-epoch radial velocity measurements of stars with a strong far-ultraviolet excess to identify post-common-envelope binaries (PCEBs). The targets have been identified ...
Binary White Dwarfs in the Supernova Ia Progenitor Survey
(Astronomical Society of the Pacific, 2007)
We report results of a systematic radial velocity survey for double degenerate (DD) binaries as potential progenitors of type Ia supernovae: SPY (ESO Supernovae Ia Progenitor surveY). More than 1000 white dwarfs (WDs) and ...
Follow-up Observations of SPY White Dwarf + M-Dwarf Binaries
(Astronomical Society of the Pacific, 2007)
We present the results of follow-up observations of white-dwarf + M-dwarf binaries identified using spectra obtained as part of the SPY survey. Spectra of the Hα region were obtained with the SPIRAL spectrograph on the AAT ...
Six detached white-dwarf close binaries
(2005-05)
New Results from the Supernova Ia Progenitor Survey
(Astronomical Society of the Pacific, 2005)
We report on a systematic radial velocity survey for double degenerate (DD) binaries as potential progenitors of type Ia supernovae: SPY (ESO Supernovae Ia Progenitor surveY). More than 1000 white dwarfs and pre-white ...
Binaries discovered by the SPY project IV. Five single-lined DA double white dwarfs
(2005)
We present results from our ongoing follow-up observations of double white dwarf binaries detected in the ESO SN Ia Progenitor SurveY (SPY). We discuss our observing strategy and data analysis and present the orbital ...
Close binary EHB stars from SPY
(2004-06)
Double Degenerate and Progenitors of Supernovae Type Ia
(Astronomical Society of the Pacific, 2004)
We report on systematic radial velocity surveys for white dwarf { white dwarf binaries (double degenerates { DDs) including SPY (ESO Supernovae Ia progenitor survey) recently carried out at the VLT. A large sample of DD ...