Chandra HETG observation of the magnetic cataclysmic variable V1223 Sgr

Details Chandra HETG observation of the magnetic cataclysmic variable V1223 Sgr Chandra HETG observation of the magnetic cataclysmic variable V1223 Sgr

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.4108m&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #41.08; Bulletin of the American Astronomical Society, Vol. 32, p.1254

Astronomy and Astrophysics

Astronomy

Scientific paper

V1223 Sgr is among the brightest magnetic cataclysmic variable in the 1--10 keV range, with a 3.36 hr orbital period and a 745.6 s spin period. Here we report the preliminary results from our Chandra HETG observation, performed on 2000 April 30/May 1, as well as from supporting observations with RXTE and ground-based telescopes. We have detected Kα lines of many atomic species in the phase-averaged HETG spectrum; in many cases, these constitute the first detection in this system. We find that the Fe L lines are substantially weaker than would be expected in a collisionally excited plasma. We will discuss possible interpretations of the line ratios.

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