Brown Dwarfs in the Alpha Persei Cluster

Details Brown Dwarfs in the Alpha Persei Cluster Brown Dwarfs in the Alpha Persei Cluster

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003iaus..211..163s&link_type=abstract

Brown Dwarfs, Proceedings of IAU Symposium #211, held 20-24 May 2002 at University of Hawaii, Honolulu, Hawaii. Edited by Eduard

Astronomy and Astrophysics

Astronomy

4

Scientific paper

We have obtained a new, deep, wide-field optical imaging survey of the young Alpha Persei cluster which reveals a well-populated lower main sequence extending into the substellar mass regime. Subsequent infrared photometry confirms that most of the candidate brown dwarfs are indeed likely to be cluster members, with a predicted minimum mass of order 0.035 solar masses. We have combined the new candidate list with previous member catalogs to derive an IMF for Alpha Per; the slope of the IMF at the low mass end is α ˜ 0.6. The Alpha Per IMF slope is thus very similar to that found in the Pleiades.

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