Mass loss in the 96 day binary UU CANCRI

Details Mass loss in the 96 day binary UU CANCRI Mass loss in the 96 day binary UU CANCRI

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...376..289e&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 376, July 20, 1991, p. 289-294.

Astronomy and Astrophysics

Astrophysics

12

Eclipsing Binary Stars, Giant Stars, K Stars, Line Spectra, Stellar Mass Ejection, Stellar Spectra, Absorption Spectra, Astronomical Photometry, Astronomical Spectroscopy, Doppler Effect, H Alpha Line

Scientific paper

A series of 16 high-dispersion spectra at H-alpha have been obtained for the tidally distorted K giant-containing long-period binary UU Cnc, in order to both study the K giant's Doppler profiles and search for the effects of accretion onto the second component. While Doppler profiles of the system for a semidetached configuration fit the observations very well, those for existing overcontact light-curve solutions all yield poorer fits. Although the H-alpha line is always stronger than those of the common giants, its equivalent width is consistent with a K4 II classification reflective of the star's 50 solar radius size. Emission wings in H-alpha are possible evidence for an accretion disk.

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