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arXiv · 0910.4773

The Mass-to-Light Ratios of Galactic Globular Clusters

J. M. Diederik Kruijssen·Steffen Mieske
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Abstract

The observed mass-to-light (M/L) ratios of globular clusters (GCs) are on average ~20% lower than expected from Simple Stellar Population (SSP) models, which only account for the effects of stellar evolution. We study the M/L ratio evolution of a sample of 24 Galactic GCs using parameterised cluster models. The dynamical evolution of GCs is included by accounting for their dissolution and by using a detailed description of the evolution of the stellar mass function. The ejection of low-mass stars leads to a decrease of M/L, which is found to explain the discrepancy between the observations and SSP models.

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J. M. Diederik Kruijssen, Steffen Mieske. 2009-10-25. The Mass-to-Light Ratios of Galactic Globular Clusters. https://arxiv.org/abs/0910.4773

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