HEAD 2000, November 2000
Session 45. Stellar Coronae/Cataclysmic Variables
Oral, Friday, November 10, 2000, 10:10-11:30am, Pago Pago Ballroom

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[45.07] XMM-Newton Observations of the Eclipsing Dwarf Nova OY~Carinae

F. Cordova, D. Pandel, J. West (UCSB), K. Mason, G. Ramsay, T. Poole (MSSL), P. Wheatley, J. Osborne (Leicester University), J. Cottam (Columbia University)

The X-ray and optical instruments onboard XMM-Newton performed two separate observations of the dwarf nova OY Carinae: a 54-ks exposure during decline from outburst and a 20-ks exposure five weeks later. In the longer exposure ten sequential eclipses were covered. This is the first observation of OY Carinae that includes the 2--10 keV X-ray band and simultaneous UV and X-ray data. We present soft and hard X-ray light curves, X-ray spectra, UV light curves, and low resolution optical and UV spectra. Deep eclipses are observed in both the X-ray and ultraviolet light curves. We discuss the X-ray eclipse profile and the constraints that this places on the location of the X-ray emission. Multi-temperature emission is required to explain the X-ray spectrum.

The author(s) of this abstract have provided an email address for comments about the abstract: cordova@omni.ucsb.edu

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