| |
 |
| Paper: |
Three New Long-period CVs from the Hamburg Quasar Survey |
| Volume: |
330, The Astrophysics of Cataclysmic Variables and Related Objects |
| Page: |
469 |
| Authors: |
Aungwerojwit, A.; Gansicke, B.T.; Rodriguez-Gil, P.; Hagen, H.-J.; Harlaftis, E.; Papadimitriou, C.; Lehto, H.; Fried, B.; Heber, U.; Engels D. |
| Abstract: |
We present time-resolved optical spectroscopy and photometry of three new relatively bright (V ~ 14.0 − 15.5) long-period cataclysmic variables discovered in the Hamburg Quasar Survey: HS 0139+0559, HS 0229+8016 and HS 0506+7725. The orbital periods, 243.2 ± 0.4 min, 233 ± 1 min and 212.6 ± 0.1 min, are determined from radial velocity studies. The light curve of HS 0506+7725 is characterised by flickering. HS 0229+8016 and HS 0139+0559 display practically no photometric variability. Whereas HS 0506+7725 is a weak X-ray emitter in the ROSAT All Sky Survey, HS 0229+8016 and HS 0139+0559 were not detected. The identification of these three systems underlines that the currently known sample of CVs is likely incomplete even for bright systems. |
|
|
|
|
|
