The 2008 outburst of the cataclysmic variable V358 Lyrae

Details The 2008 outburst of the cataclysmic variable V358 Lyrae The 2008 outburst of the cataclysmic variable V358 Lyrae

2009-05-12

arxiv.org/abs/0905.1866v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

14 pages, 4 figures. Accepted for publication in the Journal of the British Astronomical Association

Scientific paper

We report photometry of V358 Lyr during its 2008 November outburst, the first confirmed outburst since 1965. At its brightest the star was V=15.9 and the outburst amplitude was at least 7.3 magnitudes and lasted at least 23 days. The first 4 days of the outburst corresponded to the plateau phase and the star then faded at 0.13 mag/d over the next 7 days. There was then a drop in brightness to a temporary minimum at mag 19.5, which lasted less than 4 days, after which the star recovered to its previous brightness. The final stages of the outburst were poorly covered. Time resolved photometry during the outburst revealed no obvious large-scale modulations such as superhumps. Although some small apparently periodic signals were detected, their significance is uncertain. Our observations, and those of previous researchers, support V358 Lyr being a dwarf nova and are consistent with it being a member of the WZ Sge family.

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