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Deep search for companions to probable young brown dwarfs
G. Chauvin, J. Faherty, A. Boccaletti +10
We have obtained high contrast images of four nearby, faint, and very low mass objects 2MASSJ04351455-1414468, SDSSJ044337.61+000205.1, 2MASSJ06085283-2753583 and 2MASSJ06524851-57…
New Members of the Scorpius Centaurus Complex and Ages of its sub-regions
Inseok Song, Ben Zuckerman, Mike Bessell
We have spectroscopically identified about 100 G-, K- and M-type members of the Scorpius Centaurus complex. To deduce the age of these young stars we compare their Li 6708 absor…
Stellar Membership and Dusty Debris Disks in the alpha Persei Cluster
B. Zuckerman, Carl Melis, Joseph H. Rhee +2
Because of proximity to the Galactic plane, reliable identification of members of the alpha Persei cluster is often problematic. Based primarily on membership evaluations contained…
Two Extrasolar Asteroids with Low Volatile-Element Mass Fractions
M. Jura, S. Xu, B. Klein +2
Using ultraviolet spectra obtained with the Cosmic Origins Spectrograph on the Hubble Space Telescope, we extend our previous ground-based optical determinations of the composition…