The new AM CVn star in Hydra

Details The new AM CVn star in Hydra The new AM CVn star in Hydra

2003-07-28

arxiv.org/abs/astro-ph/0307473v1

Mon.Not.Roy.Astron.Soc.345:1266,2003

Astronomy and Astrophysics

Astrophysics

5 pages, 6 figures. Accepted for publication in MNRAS

Scientific paper

10.1046/j.1365-2966.2003.07049.x

High speed photometry of the new AM CVn star in Hya (previously known as SN2003aw), spectroscopically identified by Chornock & Filippenko, shows it to have a superhump period of 2041.5 +/- 0.3 s. We find a range of brightness from V ~ 16.5 to 20.3, presumably caused by variations in the rate of mass transfer. In the intermediate state the system cycles in brightness with a period of ~ 16 h and range >= 0.4 mag. There are sidebands to the principal frequencies in the Fourier transform which have constant frequency difference from the superhump harmonics.

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