Bibcode
Dillon, M.; Gänsicke, B. T.; Aungwerojwit, A.; Rodríguez-Gil, P.; Marsh, T. R.; Barros, S. C. C.; Szkody, P.; Brady, S.; Krajci, T.; Oksanen, A.
Bibliographical reference
Monthly Notices of the Royal Astronomical Society, Volume 386, Issue 3, pp. 1568-1578.
Advertised on:
5
2008
Citations
49
Refereed citations
39
Description
We present time-resolved CCD photometry of 15 cataclysmic variables
(CVs) identified by the Sloan Digital Sky Survey (SDSS). The data were
obtained as part of the 2004/2005 International Time Programme on La
Palma. We discuss the morphology of the light curves and the CV
subtypes, and give accurate orbital periods for 11 systems. Nine systems
are found below the 2-3h orbital period gap, of which five have periods
within a few minutes of the ~80min minimum orbital period. One system
each is found within and above the gap. This confirms the previously
noted trend for a large fraction of short-period systems among the SDSS
CVs. Objects of particular interest are SDSSJ0901+4809 and
SDSSJ1250+6655 which are deeply eclipsing. SDSSJ0854+3905 is a polar
with an extremely modulated light curve, which is likely due to a
mixture of cyclotron beaming and eclipses of the accretion region by the
white dwarf. One out of five systems with white dwarf dominated optical
spectra exhibits non-radial pulsations.
Related projects
Binary Stars
The study of binary stars is essential to stellar astrophysics. A large number of stars form and evolve within binary systems. Therefore, their study is fundamental to understand stellar and galactic evolution. Particularly relevant is that binary systems are still the best source of precise stellar mass and radius measurements. Research lines
Pablo
Rodríguez Gil