On the SW Sex-Type Eclipsing Cataclysmic Variable SDSS0756+0858

Abstract

We conducted a spectroscopic and photometric study of SDSS J075653.11+085831. X-ray observations were also attempted. We determined the orbital period of this binary system to be 3.29 hr. It is a deep eclipsing system, whose spectra shows mostly single-peaked Balmer emission lines and a rather intense He II line. There is also the presence of faint (often double-peaked) He I emission lines as well as several absorption lines, Mg I being the most prominent. All of these features point towards the affiliation of this object with the growing number of SW~Sex-type objects. We developed a phenomenological model of an SW~Sex system to reproduce the observed photometric and spectral features.

14 pages, 8 figures. Accepted for publication in Astron. J. (10 Dec 2013)

References in corpus (5)

• SW Sextantis stars: the dominant population of CVs with orbital periods between 3-4 hours
• Spectroscopic search for new SW Sextantis stars in the 3-4 hour orbital period range -- I
• The magnetic SW Sextantis star RX J1643.7+3402
• The SW Sex-type star 2MASS J01074282+4845188: an unusual bright accretion disk with non-steady emission and a hot white dwarf
• The SW Sex phenomenon as an evolutionary stage of Cataclysmic Variables

Cited by in corpus (12)

• The evolutionary status of Cataclysmic Variables: Eclipse modelling of 15 systems
• Evidence for reduced magnetic braking in polars from binary population models
• Spectroscopic evidence for a low-mass black hole in SWIFT J1753.5-0127
• A Catalogue of Potential Post Common Envelope Binaries
• The structure of accretion flows in nova-like cataclysmic variables: RW Sextantis and 1RXS J064434.5+334451
• Structure of accretion flows in the nova-like cataclysmic variable RW Tri
• Spectroscopic Orbital Periods for 29 Cataclysmic Variables from the Sloan Digital Sky Survey
• Orbital periods of cataclysmic variables identified by the SDSS. IX. NTT photometry of eight eclipsing and three magnetic systems
• The period-gap cataclysmic variable CzeV404 Her: A link between SW Sex and SU UMa systems
• BG Tri an example of a low inclination RW Sex-type novalike
• Search for magnetic accretion in SW Sextantis systems
• Structure of the accretion flow of IX Velorum as revealed by high-resolution spectroscopy