SW Sextantis stars: the dominant population of cataclysmic variables with orbital periods between 3 and 4 h
SW Sextantis stars: the dominant population of cataclysmic variables with orbital periods between 3 and 4 h
We present time-series optical photometry of five new cataclysmic variables (CVs) identified by the Hamburg Quasar Survey (HQS). The deep eclipses observed in HS 0129+2933 (= TT Tri), HS 0220+0603 and HS 0455+8315 provided very accurate orbital periods of 3.35129827(65), 3.58098501(34) and 3.56937674(26) h, respectively. HS 0805+3822 shows grazing eclipses …