BROWN DWARF CANDIDATES IN PRAESEPE

Authors
PINFIELD DJ HODGKIN ST JAMESON RF COSSBURN MR VONHIPPEL T
Citation
Dj. Pinfield et al., BROWN DWARF CANDIDATES IN PRAESEPE, Monthly Notices of the Royal Astronomical Society, 287(1), 1997, pp. 180-188
Citations number
34
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Monthly Notices of the Royal Astronomical Society → ACNP
ISSN journal
00358711
Volume
287
Issue
1
Year of publication
1997
Pages
180 - 188
Database
ISI
SICI code
0035-8711(1997)287:1<180:BDCIP>2.0.ZU;2-K
Abstract
We present a deep R-, I- and Z-band photometric survey of the open clu ster Praesepe. 26 new photometric candidates have been fund with I > 1 7.8, extending Praesepe's main sequence down to I 21.5. 19 of the new members are brown dwarf candidates, and two could be binary brown dwar fs. Praesepe's mass function is derived, and found to be rising into t he brown dwarf range with alpha greater than or equal to 1.5.