A survey of eclipsing binary stars in the eastern spiral arm of M31

Ian Todd, Don Pollacco, Ian Skillen, D. M. Bramich, Steve Bell, Thomas Augusteijn

Research output: Contribution to journalReview article

4 Citations (Scopus)


The results of an archival survey are presented using B, V-band imaging of the eastern spiral arm of M31. Focusing on the eclipsing binary star population, a matched-filter technique has been used to identify 280 binary systems. Of these, 127 systems (98 of which are newly discovered) have sufficient phase coverage to allow accurate orbital periods to be determined. At least nine of these binaries are detached systems, which could, in principle, be used for distance determination. The light curves of the detached and other selected systems are presented along with a discussion of some of the more interesting binaries. The impact of unresolved stellar blends on these light curves is considered.

Original languageEnglish
Pages (from-to)1006-1014
Number of pages9
JournalMonthly Notices of the Royal Astronomical Society
Issue number3
Publication statusPublished - 21 Sep 2005



  • Binaries: eclipsing
  • Galaxies: individual: M31
  • Local Group

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this