Long Period Variables in Galactic Globular Clusters: First Results

Details Long Period Variables in Galactic Globular Clusters: First Results Long Period Variables in Galactic Globular Clusters: First Results

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21541804l&link_type=abstract

American Astronomical Society, AAS Meeting #215, #418.04; Bulletin of the American Astronomical Society, Vol. 42, p.275

Astronomy and Astrophysics

Astronomy

Scientific paper

Variable stars provide important constraints on models of stellar structure, evolution, and pulsation. Variable stars in globular clusters are particularly valuable, since these systems have little internal spread in composition, age, or line-of-sight distance, thereby controlling many important parameters. Long period variable stars (LPVs) are an understudied type of variable found in globular clusters. We report progress on searches for LPVs in the clusters NGC 1851, NGC 5904 (M5), and NGC 5927, and present some light curves. Regular access over months or years to imaging telescopes is essential to this project; we discuss how we accomplish this using the 0.5-m telescope at BGSU (Ohio) and the 0.4-m PROMPT telescopes at CTIO.

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