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BANYAN. II. Very Low Mass and Substellar Candidate Members to Nearby, Young Kinematic Groups With Previously Known Signs of Youth
Jonathan Gagné, David Lafrenière, René Doyon +2
We present Bayesian Analysis for Nearby Young AssociatioNs II (BANYAN II), a modified Bayesian analysis for assessing the membership of later-than-M5 objects to any of several Near…
Direct Imaging and Spectroscopy of a Candidate Companion Below/Near the Deuterium-Burning Limit In The Young Binary Star System, ROXs 42B
Thayne Currie, Sebastian Daemgen, John Debes +5
We present near-infrared high-contrast imaging photometry and integral field spectroscopy of ROXs 42B, a binary M0 member of the 1--3 Myr-old Ophiuchus star-forming region, fro…
Discovery of a Visual T-Dwarf Triple System and Binarity at the L/T Transition
Jacqueline Radigan, Ray Jayawardhana, David Lafrenière +3
We present new high contrast imaging of 8 L/T transition brown dwarfs using the NIRC2 camera on the Keck II telescope. One of our targets, the T3.5 dwarf 2MASS J08381155 + 1511155,…
A Multiplicity Census of Intermediate-Mass Stars in Scorpius-Centaurus
Markus Janson, David Lafreniere, Ray Jayawardhana +4
Stellar multiplicity properties have been studied for much of the range from the lowest to the highest stellar masses, but intermediate-mass stars from F-type to late A-type have r…
Bayesian analysis to identify very low-mass members of nearby young stellar kinematic groups
Jonathan Gagné, David Lafrenière, René Doyon +3
We describe our all-sky survey for >M4 candidate members to nearby, young associations from the 2MASS and WISE catalogs using bayesian inference. We report the first results, inclu…
Direct imaging discovery of 12-14 Jupiter mass object orbiting a young binary system of very low-mass stars
P. Delorme, J. Gagné, J. H. Girard +8
Context. Though only a handful of extrasolar planets have been discovered via direct imaging, each of these discoveries had tremendous impact on our understanding of planetary form…