Free Access
Volume 505, Number 3, October III 2009
Page(s) 1115 - 1127
Section Galactic structure, stellar clusters, and populations
Published online 11 August 2009

Online Material

Appendix A: Proper motion non members and possible binaries

Table A.1:   Near-infrared photometry and proper motions for five sources rejected as proper motion members and three potential binary previously unresolved on the 2MASS images.

Appendix B: Faint members identified in GCS DR4

Table B.1:   Near-infrared photometry and its associated errors for 10 faint candidate members identified in ${\it YJHK}$ (top) and 5 in ${\it JHK}$ (bottom).

Appendix C: Members recovered by the GCS

Table C.1:   Near-infrared photometry and its associated errors from the fourth data release of the GCS for previously known members of $\sigma $ Orionis.

Appendix D: Published sources classified as non-members by the GCS

Table D.1:   Photometry and proper motions of known sources non selected as potential member candidates by the GCS.

Appendix E: New members identified in the GCS

Table E.1:   Near-infrared and proper motions for the new candidate membersa of $\sigma $ Orionis identified in the GCSb.

Appendix F: Variable sources

Table F.1:   Near-infrared photometry from the UKIDSS GCS DR4 compared to 2MASS for variable sources (with 99.5% confidence level).

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