The magnitude difference between the main sequence turn off and the red giant branch bump in Galactic globular clusters

@article{Cassisi2010TheMD,
  title={The magnitude difference between the main sequence turn off and the red giant branch bump in Galactic globular clusters},
  author={S. Cassisi and A. Marin-Franch and M. Salaris and A. Aparicio and M. Monelli and A. Pietrinferni},
  journal={Astronomy and Astrophysics},
  year={2010},
  volume={527}
}
We present new measurements of the magnitude of the main sequence turn off and the red giant branch bump in the luminosity function of a sample of Galactic globular clusters with updated estimates of [Fe/H] and [α/Fe], employing photometric data collected with the Advanced Camera for Survey onboard the HST. We compare measured and predicted values of the magnitude difference between these two features, a rarely employed diagnostic of the internal structure of low-mass stars at the beginning of… Expand
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