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X-ray Luminosity Versus Orbital Period of AM CVn Systems
Maccarone, T. J.; Begari, T.
AM CVn systems are a rare type of cataclysmic variable star consisting of a white dwarf accreting material from a low-mass, hydrogen-poor donor star. These helium-rich systems usually have orbital periods that are less than 65 minutes and are predicted to be sources of gravitational waves. We have analyzed the catalogued x-ray data from the Chandr…
Seventeen New Variable Stars Detected in Vulpecula and Perseus
Furgoni, R.
I report the discovery of seventeen new variable stars in the Northern Sky: three eclipsing (GSC 02129-00759; GSC 02129-00947; GSC 02869-02559), one eruptive (GSC 02856-02521), ten pulsating (2MASS J19305329+2558520; GSC 02129-00537; 2MASS J19323543+2524000; 2MASS J19263580+2616428; HD 275169; GSC 02869-00313; GSC 02869-01981; GSC 02856-01391; GSC…
Using XMM-Newton and Optical Photometry to Figure Out CVs
Szkody, P.; Henden, A.; Homer, L.
X-ray light curves from XMM-Newton combined with optical data from the satellite and ground-based observers provide distinctive shapes and periodicities that give information on the correct classification of cataclysmic variables. Our recent data on three SDSS sources with strong helium emission are used to identify a highly magnetic system (a pol…