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| Paper: |
Time-resolved Observations of the Short Period CV SDSS J123813.73-033933.0 |
| Volume: |
330, The Astrophysics of Cataclysmic Variables and Related Objects |
| Page: |
327 |
| Authors: |
Zharikov, S.V.; Tovmassian, G.H.; Neustroev, V.; Michel, R.; Napiwotzki, R. |
| Abstract: |
We present simultaneous spectral and photometric observations of SDSS J123813.73-033933.0. From Hα radial velocity measurements we determined the orbital period of the system to be 0.05592 ± 0.00002 days (80.53 min). The spectrum shows double Balmer emission lines flanked by strong, broad absorption, indicating a dominant contribution from the white dwarf. The photometric light curve shows complex variability. The system undergoes cyclic brightening up to 0.4 mag which are semi-periodical on short time scales with periods of the order of 7-12 hours. We also detect 40.25 min variability (~0.15 mag) in the light curve, that corresponds to half the orbital period. Its amplitude increases with the cyclic brightening of the system. |
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