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astro-ph1998
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…
astro-ph1998
The CV Period Minimum
Ulrich Kolb, Isabelle Baraffe
Using improved, up-to-date stellar input physics tested against observations of low-mass stars and brown dwarfs we calculate the secular evolution of low-mass donor CVs, including…
astro-ph1998
Are the red dwarfs in cataclysmic variables main-sequence stars?
K. Beuermann, I. Baraffe, U. Kolb +1
We show that the secondaries in short-period cataclysmic variables with orbital periods hr are close to the solar-abundance main sequence defined by single field stars. In…