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Discovery of Two Very Low-Mass Binaries: Final Results of an Adaptive Optics Survey of Nearby M6.0-M7.5 Stars
Nick Siegler, Laird M. Close, Kelle L. Cruz +2
We present updated results of a high-resolution, magnitude limited (Ks<12 mag) imaging survey of nearby low-mass M6.0-M7.5 field stars. The observations were carried out using adap…
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…
S Ori 70: still a strong cluster planet candidate
Eduardo L. Martín
In this paper I show that the coolest Orionis cluster planet S Ori 70 is still a strong candidate member despite recent claims by Burgasser et al. that it could be a brown dwarf…
A possible third component in the L dwarf binary system DENIS-P J020529.0-115925 discovered with the Hubble Space Telescope
H. Bouy, E. L. Martin, W. Brandner +1
We present results showing that the multiple system DENIS-P J020529.0-115925 is likely to be a triple system of brown dwarfs. The secondary of this previously known binary system s…
On the potassium-rotation connection in late-type Alpha Persei stars
Eduardo L. Martin, Antonio Magazzu, Ramon J. Garcia Lopez +2
We present measurements of the \ion{K}{i} line from spectra of 19 late-type members of the Persei cluster obtained with the Intermediate Dispersion Spectrograph at the I…