RZ Ophiuchi - Photometric variations and a detached configuration

Details RZ Ophiuchi - Photometric variations and a detached configuration RZ Ophiuchi - Photometric variations and a detached configuration

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....106..754o&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 106, no. 2, p. 754-758.

Astronomy and Astrophysics

Astronomy

7

Accretion Disks, Binary Stars, Eclipsing Binary Stars, Light Curve, Stellar Spectrophotometry, Ultraviolet Astronomy, Cool Stars, Ubv Spectra

Scientific paper

A nine-year survey of multicolor intermediate-band photometry of RZ Oph reveals small but significant brightness-change variations outside primary eclipse. Most of these changes cannot be explained by the ellipticity effect of a cool mass losing component which fills its Roche lobe. Instead, this evidence supports recent analyses that have proposed a detached configuration for this binary. Photometric and spectroscopic observations point to the existence of a large accretion disk around the hot mass-gaining star in this binary, implying that mass transfer occurs in this system by some process other than Roche lobe overflow.

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