Deep STIS Luminosity Functions for LMC Clusters

Details Deep STIS Luminosity Functions for LMC Clusters Deep STIS Luminosity Functions for LMC Clusters

1998-08-07

arxiv.org/abs/astro-ph/9808068v1

IAU Symp. 190: New Views of the Magellanic Clouds

Astronomy and Astrophysics

Astrophysics

4 pages, 4 embedded figures

Scientific paper

We present deep luminosity functions derived from HST STIS data for three rich LMC clusters (NGC 1805, NGC 1868, and NGC 2209), and for one Galactic globular cluster (NGC 6553). All of the LMC cluster luminosity functions are roughly consistent with a Salpeter IMF or with the solar neighbourhood IMF from Kroupa, Tout & Gilmore (1993). They continue to rise at least to 0.7 Msun. NGC 1868 shows evidence for mass segregation which may be primordial. A comparison of deep luminsoisty functions for seven Galactic globulars shows that the luminosity functions are eroded at low masses by amounts that are strongly correlated with distance from the Galactic plane.

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