* Astronomy

Title: On the SW Sex-Type Eclipsing Cataclysmic Variable SDSS0756+0858
Author: Gagik Tovmassian, Mercedes Stephania Hernandez, Diego Gonzalez-Buitrago, Sergey Zharikov, Maria Teresa García-Díaz

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 hours. It is a deep eclipsing system, whose spectra shows mostly single peaked Balmer emission lines and a quite 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 these features point towards affiliation of this object to the growing number of SW Sex-type objects. We developed a phenomenological model of a SW Sex system to reproduce the observed photometric and spectral features.

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