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Binaries among Ultra-cool Dwarfs and Brown Dwarfs
Wolfgang Brandner, Herve Bouy, Eduardo L. Martin +1
Observations of brown dwarfs provide important feedback on theories of atmospheres and inner structure of substellar objects. Brown dwarf binary systems furthermore offer the uniqu…
First determination of the dynamical mass of a binary L dwarf
H. Bouy, G. Duchene, R. Koehler +11
We present here the results of astrometric, photometric and spectroscopic observations leading to the determination of the orbit and dynamical masses of the binary L dwarf 2MASSW J…
X-ray Detections of Two Young Bona-Fide Brown Dwarfs
H. Bouy
I report here the detection of two bona-fide brown dwarfs by XMM-Newton: [GY92] 141 in the rho-Ophiuchus star forming region and DENIS-P J155601-233809 in the Upper Scorpius OB ass…
A young binary Brown Dwarf in the R-CrA star formation region
H. Bouy, W. Brandner, E. L. Martin +5
We present imaging and spectroscopic observations with HST (WFPC2, ACS/HRC and STIS), VLT (FORS2) and Keck (HIRES) of the dM8 ultra-cool dwarf DENIS-P J185950.9-370632, located in…