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Deep STIS Luminosity Functions for LMC Clusters

Published online by Cambridge University Press:  25 May 2016

R. Elson ,
N. Tanvir ,
G. Gilmore ,
R. A. Johnson  and
S. Beaulieu
R. Elson
Affiliation:
Institute of Astronomy, Madingley Rd., Cambridge CB3 0HA, England
N. Tanvir
Affiliation:
Institute of Astronomy, Madingley Rd., Cambridge CB3 0HA, England
G. Gilmore
Affiliation:
Institute of Astronomy, Madingley Rd., Cambridge CB3 0HA, England
R. A. Johnson
Affiliation:
Institute of Astronomy, Madingley Rd., Cambridge CB3 0HA, England
S. Beaulieu
Affiliation:
Institute of Astronomy, Madingley Rd., Cambridge CB3 0HA, England

Abstract

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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 0.7M⊙. 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.

Type
Part 6. Stellar Clusters
Information
Symposium - International Astronomical Union , Volume 190: New Views of the Magellanic Clouds , 1999 , pp. 417 - 421
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

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