RAT J1953+1859: a dwarf nova discovered through high amplitude QPOs in quiescence

Gavin Ramsay,Pasi Hakala,Thomas Barclay,Peter Wheatley,George Marshall,Harry Lehto,Ralf Napiwotzki,Gijs Nelemans,Stephen Potter,Ian Todd

Monthly Notices of the Royal Astronomical Society（2009）

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摘要

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 ∼20 min. Further observations made using the Nordic Optical Telescope showed it to be ∼4 mag brighter than in the discovery images. These photometric observations, together with ...

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关键词

accretion, accretion discs,techniques: photometric,surveys,novae, cataclysmic variables,stars: oscillations,X-rays: binaries

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