AAS 201st Meeting, January, 2003
Session 54. Compact X-Ray Sources
Poster, Tuesday, January 7, 2003, 9:20am-6:30pm, Exhibit Hall AB

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[54.09U] Doppler Shifts in the X-ray Spectrum of Cygnus X-3

M. Saia, M. J. Stark (Lafayette College)

We have measured phase dependent Doppler shifts in several emission lines in the X-ray spectrum of Cygnus X-3 as observed with the Chandra X-ray Observatory. These measurements have enabled us to put an upper limit on the mass of the binary system. This limit constrains the compact object to <3.6M\sun and the companion to < 7.3M\sun. We also make indirect measurements of the orbital separation of the system and the radius of the companion. Our analysis prefers models of the system with a small inclination of the orbital plane to the line of sight and a small nonzero eccentricity. Future observations ought to constrain this system much more strongly.

If you would like more information about this abstract, please follow the link to http://www.lafayette.edu/~starkm/pub/aas-seattle-spectrum.html. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: saiam@lafayette.edu

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Bulletin of the American Astronomical Society, 34, #4
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