Advertisement

Wide Binaries in the Orion Nebula Cluster

  • Arcadio Poveda
  • Alejandro Hernández-Alcántara
Part of the Astrophysics and Space Science Library book series (ASSL, volume 298)

Abstract

With the purpose of identifying a group of wide binaries in a very young cluster (T ≤ 106 years) and of getting a closer look at the “primaeval” distribution of separations, we have conducted a search for common proper motion companions among the nearest neighbor of each one of the Orion Nebula Cluster stars, for which Jones-Walker have determined proper motions. Each one of these pairs was subjected to a selection procedure in order to obtain a sample with a high expectation of them being physical systems. We have identified 68 such pairs of stars with projected separations between 2000 and 33 000 astronomical units. The distribution of separations f(s) seems to be Oepik-like, i.e. f(s)ds ~ds/s.

Keywords

Wide binaries Orion Nebula Cluster 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Jones, B.F., Walker, M.F. (1988). Astron. J., 95, 1755.ADSCrossRefGoogle Scholar
  2. Poveda, A., Allen, C., Herrera, M.A., Cordero, G., Lavalley, C. (1994). Rev. Mex. Astron. Astrofis.,28, 43.ADSGoogle Scholar
  3. Poveda, A., Allen, C., Herrera, M.A. (2000). in Proceedings of the 1999 Pacific Rim Conference in “Stellar Astrophysics”, K.S. Cheng et al. (eds.), 181–190.Google Scholar
  4. Scally, A., Clarke, C., McCaughrean M.J. (1999). Mon. Not. R. Astron. Soc.,306, 253.ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2003

Authors and Affiliations

  • Arcadio Poveda
    • 1
  • Alejandro Hernández-Alcántara
    • 1
  1. 1.Instituto de AstronomíaUniversidad Nacional Autónoma de MéxicoMéxico, D.F.

Personalised recommendations