Extended Tidal Tails in NGC 7089

Details Extended Tidal Tails in NGC 7089 Extended Tidal Tails in NGC 7089

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.5304g&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #53.04; Bulletin of the American Astronomical Society, Vol. 31, p.905

Astronomy and Astrophysics

Astronomy

Scientific paper

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 B_J 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.

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