Ww-Horologii - X-Ray and Optical Observations

Details Ww-Horologii - X-Ray and Optical Observations Ww-Horologii - X-Ray and Optical Observations

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.271..733t&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 271, NO. 3/DEC1, P. 733, 1994

Astronomy and Astrophysics

Astronomy

3

Scientific paper

The eclipsing AM Herculis binary WW Hor (EXO 023432-5232.3) was observed in the X-ray band with the ROSAT satellite and in the optical band with the 3.9-m telescope of the Anglo-Australian Observatory. A clear eclipse is seen in the X-ray light curve of this system for the first time. The relative location of the X-ray eclipse suggests that the accretion pole on the white dwarf surface has migrated in the last few years, consistent with the optical data. The 0.2-2 keV spectrum is well fitted with an absorbed power-law model. There is no indication of a soft blackbody component, although such a component could be masked by the absorption. The X-ray luminosity of the system in the 0.2-2 keV band is 1.0 x 1031 erg 1 Key words: binaries: close - stars: individual: WW Hor - stars: magnetic fields - novae, cataclysmic variables - X-rays: stars.

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