High spectral and time resolution observations of the eclipsing polar RX J0719.2+6557

Details High spectral and time resolution observations of the eclipsing polar RX J0719.2+6557 High spectral and time resolution observations of the eclipsing polar RX J0719.2+6557

1998-09-24

arxiv.org/abs/astro-ph/9809306v1

Astronomy and Astrophysics

Astrophysics

6 pages, paspconf style, incl. 6 colour figures, Conf. on Magnetic CVs, Annapolis, July 1998 (to appear in PASP, Ed. C. Hellie

Scientific paper

We present phase-resolved spectral and multicolor CCD-photometric observations of the eclipsing polar RX J0719.2+6557 obtained with relatively high time (~600 sec/15 sec) and spectral (2.1 A) resolution when the system was in a high accretion state. The trailed spectrograms clearly reveal the presence of three different line components with different width and radial velocity variation. We were able to resolve all three components by line deblending, and by means of Doppler tomography were able to unambiguously identify the emission components with the secondary star, the ballistic part of the accretion stream and the magnetically funnelled part of the stream. The light curves and eclipse profiles provide additional information about the system geometry.

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