The Delta Scorpii Be Binary. The Disk Development and Periastron 2011.

Details The Delta Scorpii Be Binary. The Disk Development and Periastron 2011. The Delta Scorpii Be Binary. The Disk Development and Periastron 2011.

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21733924m&link_type=abstract

American Astronomical Society, AAS Meeting #217, #339.24; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

Delta Scorpii is a bright (V=2.3 mag) binary system with a B0-type primary and supposedly a B-type secondary at an
eccentric orbit (e=0.94). A brightening detected in the summer of 2000 marked the beginning of a circumstellar disk
formation around the primary component. It occurred a few months before the periastron which was detected through a strong radial velocity change in September 2000. We present a history of the disk development and discuss possible explanations for the observed variations of the optical and near-infrared brightness and emission line profiles. The next periastron is predicted to occur in early July 2011. We emphasize the importance of frequent observations of Delta Scorpii with various techniques in 2011, predict some phenomena that may occur near periastron, and suggest observing strategies.

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