Chandra Observation of U Gem

Details Chandra Observation of U Gem Chandra Observation of U Gem

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.4107s&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #41.07; Bulletin of the American Astronomical Society, Vol. 32, p.1254

Astronomy and Astrophysics

Astronomy

Scientific paper

We present preliminary results of a Chandra HETG/ACIS observation of the prototypical dwarf nova U Gem in quiescence. HETG's excellent spectral resolution has the capability to resolve line complexes, which was not possible with previous X-ray observatories, that are crutial to plasma diagonostics. We discuss the analyses of the iron complex at 6.4--6.9 keV and the emission lines from He-like elements in the 0.4--2.4 keV range. We will try to use the line ratios and line equivalent widths measured in the spectrum to determine the ionization states in the accretion zone and the temperature and density distribution in the boundary layer. The velocity resolution of HETG should also allow us to determine the rotation rate and the physical location of the boundary layer. This research was partially funded by NASA grant GO0-1093X.

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