7 papers · 1 filter
The Collinder 69 cluster in the context of the Lambda Orionis SFR
David Barrado y Navascues, J. R. Stauffer, J. Bouvier +1
The Lambda Orionis Star Forming Region is a complex structure which includes the Col 69 (Lambda Orionis) cluster and the B30 & B35 dark clouds. We have collected deep optical photo…
Low-mass substellar candidates in NGC 2264
Tim Kendall, Jerome Bouvier, Estelle Moraux +1
NGC 2264 is a young (3 Myr), populous star forming region for which our optical studies have revealed a very high density of potential brown dwarf (BD) candidates - 236 in less tha…
The lower mass function of young open clusters
J. Bouvier, E. Moraux, J. R. Stauffer +2
We report new estimates for the lower mass function of 5 young open clusters spanning an age range from 80 to 150 Myr. In all studied clusters, the mass function across the stellar…
Accretion in Taurus PMS binaries: a spectroscopic study
Gaspard Duchene, Jean-Louis Monin, Jerome Bouvier +1
We present low-resolution optical spectra of each component of 10 T Tauri (TT) binary systems with separations ranging from 0.9" to 3.5" and located in the Taurus star-forming regi…
Low-mass binaries in the young cluster IC 348: implications for binary formation and evolution
Gaspard Duchene, Jerome Bouvier, Theodore Simon
We report on a near-infrared adaptive optics survey of a sample of 66 low-mass members of the pre-main sequence stellar cluster IC 348. We find 12 binary systems in the separation…
Discovery of a Very Low-Mass Binary with HST/NICMOS
E. L. Martin, G. Basri, W. Brandner +7
Hubble Space Telescope NICMOS observations are presented of six brown dwarf candidates in the Pleiades open cluster. One of them, namely CFHT-Pl-18, is clearly resolved as a binary…