Very Low Mass Stars and Brown Dwarfs of the Young Open Cluster IC2391

Details Very Low Mass Stars and Brown Dwarfs of the Young Open Cluster IC2391 Very Low Mass Stars and Brown Dwarfs of the Young Open Cluster IC2391

2000-11-27

arxiv.org/abs/astro-ph/0011492v1

Astronomy and Astrophysics

Astrophysics

Accepted ApJ

Scientific paper

10.1086/320359

We have identified a large sample of probable low mass members of the young open cluster IC2391 based on optical (VRIZ) and Infrared (JHK$_s$) photometry. Our sample includes 50 probable members and 82 possible members, both very low mass stars and brown dwarfs. We also provide accurate positions for these stars and brown dwarf candidates derived from red UK Schmidt plates measured using the microdensitometer SuperCOSMOS. Assuming an age of 53 Myr, we estimate that we have reached a mass of 0.025 M$_\odot$, if the identified objects are indeed members of IC2391.

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