Deducing the Milky Way's Massive Cluster Population

Details Deducing the Milky Way's Massive Cluster Population Deducing the Milky Way's Massive Cluster Population

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hia....15..794h&link_type=abstract

Highlights of Astronomy, Volume 15, p. 794-794

Astronomy and Astrophysics

Astronomy

1

Galaxy: Stellar Content — Open Clusters And Associations: General

Scientific paper

Recent near-infrared surveys of the galactic plane have been used to identify new massive cluster candidates. Follow up study indicates about half are not true, gravitationally-bound clusters. These false positives are created by high density fields of unassociated stars, often due to a sight-line of reduced extinction. What is not so easy to estimate is the number of false negatives, clusters which exist but are not currently being detected by our surveys. In order to derive critical characteristics of the Milky Way's massive cluster population, such as cluster mass function and cluster lifetimes, one must be able to estimate the characteristics of these false negatives. Our group has taken on the daunting task of attempting such an estimate by first creating the stellar cluster imaging simulation program, MASSCLEAN. I will present our preliminary models and methods for deriving the biases of current searches.

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