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Diane-Feuillet

Diane Feuillet

Researcher

Diane-Feuillet

BVI Photometry and the Red Giant Branch Luminosity Function of M15

Author

  • Diane Feuillet
  • N. E. Q. Paust
  • B. Chaboyer

Summary, in English

We present new BVI photometry containing 40,000 stars of the Galactic globular cluster M15 (NGC 7078) covering a 25×25 arcminute area centered on the cluster with a magnitude range from the tip of the Red Giant Branch to three magnitudes below the main sequence turn-off. Using α -enhanced Dartmouth Stellar Evolution Program models, we find an age of 13.0 ± 1.0 Gyr and distance modulus of (m−M)V=15.4±0.1 through isochrone fitting. Unlike previous works, we find good agreement between the observed completeness-corrected stellar luminosity function and models.

Publishing year

2014-08

Language

English

Publication/Series

Publications of the Astronomical Society of the Pacific

Volume

126

Issue

942

Document type

Journal article

Publisher

University of Chicago Press

Topic

  • Astronomy, Astrophysics and Cosmology

Status

Published

ISBN/ISSN/Other

  • ISSN: 1538-3873