New Light Curves and Orbital Solution for AM Leonis

Details New Light Curves and Orbital Solution for AM Leonis New Light Curves and Orbital Solution for AM Leonis

Apr 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004pasp..116..337h&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 116, Issue 818, pp. 337-344.

Astronomy and Astrophysics

Astronomy

5

Stars: Individual (Am Leonis), Stars: Binaries: Eclipsing

Scientific paper

New UBVRI photometry has been obtained for the W UMa eclipsing system AM Leonis. The data have been used to derive nine times of minimum and to construct light curves. The minimum timings show that the system recently had a significant period increase. Modeling of the light curves shows AM Leo to be an overcontact system with a mass ratio of 2.51. Both Rucinski & Duerbeck's absolute magnitude calibration for W UMa stars applied to our photometry and the radial velocity curve combined with our derived parameters indicate a distance near 125 pc, larger than the 77 pc from the Hipparcos parallax.

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