Analyzing the δ Sco binary in anticipation of a disk-star collision

Ashley Ames, Christopher Tycner, Robert Zavala

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


A current investigation is underway into the possible collision between a circumstellar disk and the secondary star in the δ Scorpii binary system. δ Scorpii is a prime candidate for a disk-star collision since the primary star has a circumstellar disk and the secondary star has a highly elliptical orbit with a period of approximately 10.5 years making the periastron passage very close to the primary star. The Navy Prototype Optical Interferometer (NPOI) was used to spatially resolve the two stars as well as the cirumstellar disk around the primary. A revised orbit with new orbital parameters has been calculated using observations obtained between 2005 and 2010. Our results indicate periastron passage will occur on 2011-07-03.

Original languageEnglish
Title of host publicationActive OB stars
Subtitle of host publicationstructure, evolution, mass loss, and critical limits
PublisherCambridge University Press
Number of pages2
ISBN (Print)9780521198400
StatePublished - Jul 2010

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221


  • Astrometry
  • Binaries: general
  • Instrumentation: high angular resolution


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