AAS Meeting #194 - Chicago, Illinois, May/June 1999
Session 53. Star Clusters Near and Far, Old and Young
Display, Tuesday, June 1, 1999, 10:00am-7:00pm, Southeast Exhibit Hall

[Previous] | [Session 53] | [Next]

[53.04] Extended Tidal Tails in NGC 7089

C. J. Grillmair (SIRTF Science Center), M. Irwin (Cambridge University)

We examine the large-scale distribution of stars surrounding the Galactic globular cluster NGC 7089. We use APM scans of two POSSII fields to obtain photographic BJ and R magnitudes for stars over a 50 square degree area. By selecting only those stars with colors and magnitudes consistent with stars in NGC 7089 itself, we eliminate the majority of foreground stars from the analysis. Mapping the remaining stars (primarily those at the main sequence turnoff) we find evidence for surface density enhancements on large scales which we associate with tidal tails. We are limited primarily by the depth of the sky-limited plate material; upcoming wide-field CCD imaging campaigns will enable significant improvements in this area.

If the author provided an email address or URL for general inquiries, it is a s follows:


[Previous] | [Session 53] | [Next]