Probing young massive clusters with laser guide star adaptive optics

Details Probing young massive clusters with laser guide star adaptive optics Probing young massive clusters with laser guide star adaptive optics

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ap%26ss.324..109m&link_type=abstract

Astrophysics and Space Science, Volume 324, Issue 2-4, pp. 109-112

Astronomy and Astrophysics

Astrophysics

1

Galaxies: Star Clusters, Methods: Observational

Scientific paper

We use laser guide star adaptive optics (LGS/AO) on the 10 m Keck II telescope to obtain high spatial resolution images of young massive clusters (YMCs) in NGC1569 and M82. These data probe YMC structure and the relation of the YMCs to the ambient field star population. The higher resolution of Keck LGS/AO relative to Hubble Space Telescope/NICMOS in the near-infrared enables us to examine whether YMCs are monolithic or hierarchical assemblies. The new integral-field spectrometer OSIRIS operating behind LGS/AO can trace the distribution of massive evolved stars within a cluster and reveal the nature of mass segregation.

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