The mysterious nature of HS2331+3905
Astrophysics
2007-05-23 v1
Abstract
We report the discovery of one unique cataclysmic variable drawn from the Hamburg Quasar Survey, HS2331+3905. Follow-up observations obtained over three years unveiled a very unusual picture. The large amplitude 3.5 h radial velocity variations obtained from our optical spectroscopy is not the orbital period of the system, as one would normally expect. Instead, extensive CCD photometry strongly suggests that HS2331+3905 is a short orbital period cataclysmic variable with Porb = 81.09 min, containing a cold white dwarf which appears to exhibit ZZ Ceti pulsations.
Cite
@article{arxiv.astro-ph/0402270,
title = {The mysterious nature of HS2331+3905},
author = {S. Araujo-Betancor and B. T. Gaensicke and H. -J. Hagen and T. Marsh and J. Thorstensen and E. Harlaftis and R. E. Fried and D. Engels},
journal= {arXiv preprint arXiv:astro-ph/0402270},
year = {2007}
}
Comments
2 pages, 2 figures, LaTex, to appear in proceedings of the IAU Coll. 194 "Compact Binaries in the Galaxy and Beyond", La Paz (Mexico), November 17-21, 2003