AAS 197, January 2001
Session 10. Low Mass Star Formation
Display, Monday, January 8, 2001, 9:30am-7:00pm, Exhibit Hall

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[10.11] A Deep Objective Prism Survey for Classical T Tauri Stars in the Sigma Orionis Region

A. Babcock, Wm. B. Weaver (Monterey Institute for Research in Astronomy)

Three degrees north of the Orion Nebula is a group of 15 B stars including Sigma Orionis. Kiso objective prism surveys have detected H-alpha emission-line objects in the area. There are about 100 X-ray sources within one degree of Sigma Ori.

A very deep 1976 CTIO Curtis Schmidt objective prism plate taken under excellent conditions of the area has permitted us to search for fainter classical T Tauri stars associated with this cluster. We have discovered 60 H-alpha emission stars in the area to a limiting magnitude of about 17. Most of these stars are new additions to the growing list of PMS objects identified in this very dense, very young cluster.

The author(s) of this abstract have provided an email address for comments about the abstract: bw@mira.org

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