2001A&A...365L.288R


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.15CEST06:48:41

2001A&A...365L.288R - Astronomy and Astrophysics, volume 365, L288-293 (2001/1-1)

First XMM-Newton observations of a cataclysmic variable I: Timing studies of OY Car.

RAMSAY G., POOLE T., MASON K., CORDOVA F., PRIEDHORSKY W., BREEVELD A., MUCH R., OSBORNE J., PANDEL D., POTTER S., WEST J. and WHEATLEY P.

Abstract (from CDS):

We present XMM-Newton observations of the eclipsing, disc accreting, cataclysmic variable OY Car which were obtained as part of the performance verification phase of the mission. The star was observed 4 days after an outburst and then again 5 weeks later when it was in a quiescent state. There is a quasi-stable modulation of the X-rays at ∼2240s, which is most prominent at the lowest energies. We speculate that this may be related to the spin period of the white dwarf. The duration of the eclipse ingress and egress in X-rays is 20-30s. This indicates that the bulk of the X-ray emission originates from the boundary layer which has a negligible height above the surface of the white dwarf. The eclipse profile implies a white dwarf of mass M1=0.9-1.1M and a secondary star of M2=0.08-0.11M.

Abstract Copyright:

Journal keyword(s): accretion, accretion discs - binaries: eclipsing - stars: individual: OY Car - novae, cataclysmic variables - X-rays: stars

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* HT Cas DN* 01 10 13.1213309510 +60 04 35.489284826           M5.5e 366 0
2 V* Z Cha DN* 08 07 27.7421647579 -76 32 00.679589237   12.00       M5.5 588 1
3 V* OY Car DN* 10 06 22.0792108747 -70 14 04.582997921           ~ 549 0

    Equat.    Gal    SGal    Ecl

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2020.07.15-06:48:41

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