The luminosity function of the Large Magellanic Cloud globular cluster NGC 1866
Abstract
We present {\it Hubble Space Telescope} {\it V,I} photometry of the central region of the LMC cluster NGC 1866, reaching magnitudes as faint as V=27 mag. We find evidence that the cluster luminosity function shows a strong dependence on the distance from the cluster center, with a clear deficiency of low luminosity stars in the inner region. We discuss a {\it global} cluster luminosity function as obtained from stars in all the investigated region, which appears in impressive agreement with the prediction from a Salpeter mass distribution. We also revisit the use of NGC 1866 as a probe for determining the efficiency of core overshooting, and conclude that a definitive answer to this question is not possible from this cluster.
Keywords
Cite
@article{arxiv.astro-ph/0302458,
title = {The luminosity function of the Large Magellanic Cloud globular cluster NGC 1866},
author = {E. Brocato and V. Castellani and E. Di Carlo and G. Raimondo and A. R. Walker},
journal= {arXiv preprint arXiv:astro-ph/0302458},
year = {2009}
}
Comments
AJ accepted, 16 pages, 19 figures, uses aastex.cls