The Be binary star Delta Sco: Revised Orbit and Implications for the Circumstellar Disk

Details The Be binary star Delta Sco: Revised Orbit and Implications for the Circumstellar Disk The Be binary star Delta Sco: Revised Orbit and Implications for the Circumstellar Disk

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.1010z&link_type=abstract

American Astronomical Society Meeting 208, #10.10; Bulletin of the American Astronomical Society, Vol. 38, p.90

Astronomy and Astrophysics

Astronomy

Scientific paper

Delta Scorpii is a Be star and the largest member of a binary with a 10.5 year period. We have revised the orbital elements using the Navy Prototype Optical Interferometer (NPOI), published speckle and radial velocity data. The NPOI observations are the first to clearly resolve the system near periastron passage, at a separation of approximately 20 mas. We present this new orbit, and discuss the implications of the orbit on the stability of the circumstellar disk of Delta Sco. These results will be of interest for planning observations during the next periastron passage in 2011.

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