A deep, wide-field search for substellar members in NGC 2264
- Kendall, T. R.
- Bouvier, J.
- Moraux, E.
- James, D. J.
- Ménard, F.
DOIAbstract
International audienceWe report the first results of our ongoing campaign to discover the first brown dwarfs (BD) in NGC 2264, a young (3 Myr), populous star forming region for which our optical studies have revealed a very high density of potential candidates - 236 in <1 deg2 - from the substellar limit down to at least ~20 M_Jup for zero reddening. Candidate BD were first selected using wide field (I,z) band imaging with CFH12K, by reference to current theoretical isochrones. Subsequently, 79 (33%) of the I,z sample were found to have near-infrared 2MASS photometry (JHK_s±0.3 mag or better), yielding dereddened magnitudes and allowing further investigation by comparison with the location of NextGen and DUSTY isochrones in colour-colour an...
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