Eclipses of U Geminorum

Details Eclipses of U Geminorum Eclipses of U Geminorum

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...206..790a&link_type=abstract

Astrophysical Journal, vol. 206, June 15, 1976, pt. 1, p. 790-794.

Other

28

Dwarf Stars, Eclipsing Binary Stars, Mass Transfer, Novae, Stellar Occultation, Power Spectra, Stellar Mass Ejection, Variable Stars

Scientific paper

Seven precise eclipse times for the cataclysmic variable star U Geminorum have been obtained during the 1974-1975 observing season. These, together with 65 others, have been used to reevaluate the eclipse parameters. With some selection of the eclipses used, a statistically significant slowdown of the binary system is found. Using previously published masses for the components of U Gem, a mass transfer rate of 81 billionths of a solar mass per year away from the primary is inferred. This direction of mass transfer is opposite to that required by current theoretical understanding of these systems.

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