Progress in Parallaxes at USNO

Details Progress in Parallaxes at USNO Progress in Parallaxes at USNO

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..338..122h&link_type=abstract

Astrometry in the Age of the Next Generation of Large Telescopes, ASP Conference Series, Vol. 338, Proceedings of a meeting held

Other

5

Scientific paper

The accuracy of trigonometric parallaxes from the U.S. Naval Observatory (USNO) has continued to improve. An optical CCD camera is used regularly on the 61-inch telescope. It produces parallaxes with typical errors of ±0.5 mas, and can reach ±0.3 mas with some effort. The program provides distances, absolute magnitudes, and tangential velocities accurate to a few percent for many white dwarfs and low-luminosity red and brown dwarfs. Other classes of special interest being observed are planetary nebulae, cataclysmic variables, dwarf novae, and dwarf carbon stars. Some stars show residual perturbations from a close companion, and the astrometric orbital solutions indicate a brown dwarf or (in a few cases) a possible planetary-mass companion. In addition, a near-IR InSb camera is used for parallaxes of very red L and T brown dwarfs. We discuss the relationship of USNO and other programs, and the prospects for further progress.

Affiliated with

Also associated with

No associations

Rating

Progress in Parallaxes at USNO does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Progress in Parallaxes at USNO, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Progress in Parallaxes at USNO will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1620698