FS Aur - a new class of Cataclysmic Variables or the missing link between Intermediate Polars and SW Sex objects?
Abstract
FS Aur is a known dwarf nova with an orbital period of about 85.7 minutes. It has been assumed to be a member of the SU UMa subclass of cataclysmic variables (CVs), but previous searches for superhumps and superoutburst have been unsuccessful. We conducted a series of photometric and spectroscopic observations of FS Aur during quiescence. We confirmed its short orbital period from radial velocity measurements. However, the long-term photometry revealed an unexpected result: the system also shows a distinct 0.24 mag modulation in the BVR photometric bands with a period of 205.5 min, which is 2.4 times longer than the orbital period. We discuss various possible causes for such a peculiar behavior.
Cite
@article{arxiv.astro-ph/0302562,
title = {FS Aur - a new class of Cataclysmic Variables or the missing link between Intermediate Polars and SW Sex objects?},
author = {G. Tovmassian and S. Zharikov and R. Michel and ; V. Neustroev and J. Greiner and D. Skillman and D. Harvey and R. Fried and J. Patterson},
journal= {arXiv preprint arXiv:astro-ph/0302562},
year = {2009}
}
Comments
12 pages, 1 table, 12 figures, accepted for publication in PASP