A new cataclysmic variable RX J0757.0+6306: candidate for the shortest period intermediate polar

July 1998 • 1998A&A...335..227T

Authors • Tovmassian, G. H. • Greiner, J. • Kroll, P. • Szkody, P. • Mason, P. A. • Zickgraf, F. -J. • Krautter, J. • Thiering, I. • Serrano, A. • Howell, S. • Ciardi, D. R.

Abstract • A new cataclysmic variable is identified as the optical counterpart of the faint and hard X-ray source RX J0757.0+6306 discovered during the ROSAT all-sky survey. Strong double-peaked emission lines bear evidence of an accretion disc via an S-wave which varies with a period of 81+/- 5 min. We identify this period as the orbital period of the binary system. CCD photometry reveals an additional period of 8.52+/- 0.15 min. which was stable over four nights. We suggest that RX J0757.0+6306 is possibly an intermediate polar, but we cannot exclude the possibility that it is a member of the SU UMa group of dwarf novae.

Links

• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=1998A%26A...335..227T
• PREPRINT http://arxiv.org/abs/astro-ph/9803234
• GIF http://articles.adsabs.harvard.edu/full/1998A%26A...335..227T
• ARTICLE http://articles.adsabs.harvard.edu/full/1998A%26A...335..227T?defaultprint=YES
• SPIRES http://inspirehep.net/search?p=find+eprint+astro-ph/9803234