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BVI Photometry and the Red Giant Branch Luminosity Function of M15

Feuillet, Diane LU orcid ; Paust, N. E. Q. and Chaboyer, B. (2014) In Publications of the Astronomical Society of the Pacific 126(942).
Abstract
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.
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author
; and
publishing date
type
Contribution to journal
publication status
published
subject
in
Publications of the Astronomical Society of the Pacific
volume
126
issue
942
pages
9 pages
publisher
University of Chicago Press
external identifiers
  • scopus:84907062147
ISSN
1538-3873
DOI
10.1086/677845
language
English
LU publication?
no
id
bae64199-a9ed-49f1-8e6b-43144e1c8e8e
date added to LUP
2019-11-27 10:53:58
date last changed
2022-03-28 13:48:01
@article{bae64199-a9ed-49f1-8e6b-43144e1c8e8e,
  abstract     = {{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.}},
  author       = {{Feuillet, Diane and Paust, N. E. Q. and Chaboyer, B.}},
  issn         = {{1538-3873}},
  language     = {{eng}},
  number       = {{942}},
  publisher    = {{University of Chicago Press}},
  series       = {{Publications of the Astronomical Society of the Pacific}},
  title        = {{BVI Photometry and the Red Giant Branch Luminosity Function of M15}},
  url          = {{http://dx.doi.org/10.1086/677845}},
  doi          = {{10.1086/677845}},
  volume       = {{126}},
  year         = {{2014}},
}