Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.5207s&link_type=abstract
American Astronomical Society Meeting 203, #52.07; Bulletin of the American Astronomical Society, Vol. 35, p.1289
Astronomy and Astrophysics
Astronomy
Scientific paper
We present a large (98 stars) complete sample of AGB stars in the globular cluster M5 that were selected using a combination of ground-based and archival HST (Piotto et al. 2002) photometry in B, V, and I bands. The sample covers the innermost 8 arcminutes of the cluster. In combination with a corresponding sample of horizontal branch stars, we derive a population ratio value R2 = 0.18 ± 0.02 - a high value that is related to the cluster's horizontal branch morphology. We also examine methods of extracting evolutionary information from the distribution of stars on the AGB, including a ratio of the population of clump to non-clump stars, and the cumulative luminosity function.
This work is supported under grant AST 00-98696 from the National Science Foundation.
Bolte Michael
Sandquist Eric
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