Spectroscopic Orbit of the Eclipsing Binary AI Draconis

Details Spectroscopic Orbit of the Eclipsing Binary AI Draconis Spectroscopic Orbit of the Eclipsing Binary AI Draconis

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ap%26ss.260..299k&link_type=abstract

Astrophysics and Space Science, v. 260, Issue 3, p. 299-307 (1999).

Astronomy and Astrophysics

Astrophysics

4

Scientific paper

New radial velocity measurements of the Algol-type eclipsing binary AI Dra, based on Reticon observations, are presented. The velocity measures themselves are based on fitting theoretical profiles, generated by a physical model of the binary, to the observed cross-correlation function (ccf). Such profiles match this function very well, much better in fact that Gaussian profiles which are generally used. Measuring the ccf's with Gaussian profiles yields following results: mp sin3 i=2.55± 0.05m&sun;, ms sin3 i = 1.14 ± 0.03m&sun;, (ap + as) sin i=7.34 ±0.05R&sun;, and mp/ms =2.23± 0.05. Where as measuring the ccf's with theoretical profiles yields a mass ratio of 2.33 and following results:

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