O'Connell Effect in Early-Type Contact(?) Binaries: DU Boo and AG Vir

Details O'Connell Effect in Early-Type Contact(?) Binaries: DU Boo and AG Vir O'Connell Effect in Early-Type Contact(?) Binaries: DU Boo and AG Vir

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1314...39p&link_type=abstract

INTERNATIONAL CONFERENCE ON BINARIES: In celebration of Ron Webbink's 65th Birthday. AIP Conference Proceedings, Volume 1314, p

Astronomy and Astrophysics

Astronomy

Binary Stars, Stellar Clusters, Astronomical Observatories, Radiative Transfer, Spectroscopic Binaries, Close Binaries, Associations Of Stars In The Milky Way, Observatories And Site Testing, Radiative Transfer, Scattering

Scientific paper

O'Connell effect in early-type close eclipsing binaries is not caused by solar-type spots. In most early-type contact binaries it has the same sign: maximum following the primary minimum being the brighter of the two. Broadening functions of two early-type systems, DU Boo and AG Vir, do not show presence of dark solar-type spots in spite of strong light-curve asymmetry but indicate departures from the Roche model and/or possibly additional structures (stream, disc, etc.).

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