David G. Monet

TL;DR: In this article, a trigonometric parallax determination for 28 late type dwarfs and brown dwarfs is presented, including eight M dwarfs with spectral types between M7 and M9.5, 17 L dwarfs between L0 and L8, and three T dwarfs.

TL;DR: This new component, Gl 570D, was initially identified from the Two Micron All-Sky Survey and shows the 1.6 and 2.2 µm CH4 absorption bands characteristic of T dwarfs, while its common proper motion with the Gl 570ABC system confirms companionship.

TL;DR: The Yale/San Juan Southern Proper Motion Catalog (SPM4) as mentioned in this paper contains absolute proper motions, celestial coordinates, and (B,V) photometry for over 103 million stars and galaxies between the south celestial pole and -20 deg declination.

TL;DR: The USNO CCD Astrograph (UCA) started an astrometric survey in 1998 February at Cerro Tololo, Chile, which includes data taken up to 1999 November with about 80% of the Southern Hemisphere covered as mentioned in this paper.

TL;DR: In this paper, the authors presented two confirmed wide-separation L dwarfs common proper-motion companions to nearby stars and one candidate identified from the Two Micron All Sky Survey, which brought the number of known wide-binary (Δ ≥ 100 AU) L dwarf companions of nearby stars to nine.