A Spectroscopic Search For New SW Sextantis Stars

Details A Spectroscopic Search For New SW Sextantis Stars A Spectroscopic Search For New SW Sextantis Stars

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21343411s&link_type=abstract

American Astronomical Society, AAS Meeting #213, #434.11; Bulletin of the American Astronomical Society, Vol. 41, p.305

Astronomy and Astrophysics

Astronomy

Scientific paper

We present time-resolved spectroscopy on four previously poorly studied nova-like cataclysmic variables (CVs) with the goal of searching for SW Sextantis type behavior. All four systems lie near the upper boundary of the period gap, with orbital periods between 2.5 and 4.25 hours and are non-eclipsing.
Of the four systems, we find three to be probable SW Sextantis systems. For IM Eri, we estimate an orbital inclination of 14 < i < 30 degrees, much lower than for typical SW Sex systems.
In both KQ Mon and V1193 Ori we observe P-Cygni profiles, and multiple observations of V1193 Ori confirm that the event is phase dependent. These observations support the idea that the SW Sex phenomenon are correlated with mass outflow events.

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