A photometric survey for low-mass members of IC 2391

Citation
Bm. Patten et Cm. Pavlovsky, A photometric survey for low-mass members of IC 2391, PUB AST S P, 111(756), 1999, pp. 210-216
Citations number
35
Categorie Soggetti
Space Sciences
Journal title
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
ISSN journal
00046280 → ACNP
Volume
111
Issue
756
Year of publication
1999
Pages
210 - 216
Database
ISI
SICI code
0004-6280(199902)111:756<210:APSFLM>2.0.ZU;2-6
Abstract
A VRI photometric survey has been conducted in the young open cluster IC 23 91 to identify candidate low-mass cluster members. Photometry for some 10,7 25 objects, ranging from V = 10 to V = 20, were extracted from 21 CCD field s positioned within 1 degrees of the nominal cluster center [alpha(2000) = 08(h)42(m), delta(2000) = -53 degrees 00']. Seventeen stars have been ident ified as candidate cluster members with (V-T) colors ranging from 2.78 to 3 .72. The masses of these candidate members are estimated to range from 0.25 to 0.09 M.. If these stars are indeed IC 2391 members, they will help to r ectify an apparent deficit of low-luminosity stars in the luminosity functi on of this cluster.