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astro-ph2004
Dynamical Masses of the Binary Brown Dwarf GJ 569Bab
M. R. Zapatero Osorio, B. L. Lane, Ya. Pavlenko +3
We have obtained new images and high-resolution (R ~ 22400) near-infrared (1.2400-1.2575 micron) spectra of each component of the brown dwarf binary GJ 569Bab using the Adaptive Op…
astro-ph2004
A CCD Imaging Search for Wide Metal-Poor Binaries
M. R. Zapatero Osorio, E. L. Martin
We explored the regions within a radius of 25 arcsec around 473 nearby, low-metallicity G- to M-type stars using (VR)I optical filters and small-aperture telescopes. About 10% of t…