Period variation of the W UMa-type binary UZ Leonis

Details Period variation of the W UMa-type binary UZ Leonis Period variation of the W UMa-type binary UZ Leonis

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasp..104..733h&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 104, no. 679, p. 733-736.

Astronomy and Astrophysics

Astronomy

14

Eclipsing Binary Stars, Light Curve, Periodic Variations, Photographic Plates, Star Clusters, Stellar Mass Accretion, Astronomical Observatories, Astronomical Photography, Stellar Magnitude, Variable Stars

Scientific paper

It is shown that the well-known W Ursae Majoris-type eclipsing binary system UZ Leonis has an appreciable period increase. This conclusion is obtained by the analysis of 61 earlier times of minimum (available from the literature) and 13 newer ones (from photographic plates and photoelectric measurements). The period increase implies that the primary is accreting mass at a rate of M/M = 5.4 x 10 exp -8/yr.

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