The Luminosity Function of M3
Astrophysics
2009-10-31 v1
Abstract
We present a high precision, large sample luminosity function (LF) for the Galactic globular cluster M3. With a combination of ground based and Hubble Space Telescope data we cover the entire radial extent of the cluster. The observed LF is well fit by canonical standard stellar models from the red giant branch (RGB) tip to below the main sequence turnoff point. Specifically, neither the RGB LF-bump nor subgiant branch LF indicate any breakdown in the standard models. On the main sequence we find evidence for a flat initial mass function and for mass segregation due to the dynamical evolution of the cluster.
Keywords
Cite
@article{arxiv.astro-ph/9905193,
title = {The Luminosity Function of M3},
author = {R. T. Rood and E. Carretta and B. Paltrinieri and F. R. Ferraro and F. Fusi Pecci and B. Dorman and A. Chieffi and O. Straniero and R. Buonanno},
journal= {arXiv preprint arXiv:astro-ph/9905193},
year = {2009}
}
Comments
18 pages, 13 figures. ApJ, in press