Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-04-15
Astrophys.J. 582 (2003) 1001-1010
Astronomy and Astrophysics
Astrophysics
Submitted to ApJ, 28 pages including 7 figures
Scientific paper
10.1086/344818
We outline the construction of an updated version of the New Luyten Two-Tenths (NLTT) catalog of high proper motion stars, which will contain improved astrometry and photometry for the vast majority of the ~59,000 stars in NLTT. The bright end is constructed by matching NLTT stars to Hipparcos, Tycho-2, and Starnet; the faint end by matching to USNO-A and 2MASS. In this first paper, we detail the bright-end matching procedure. We show that for the majority of stars in his catalog, Luyten measured positions accurate to 1" even though he recorded his results much more coarsely. However, there is a long tail of position errors, with one error as large as 11 deg. Proper-motion errors for the stars with small position errors are 24 mas/yr (1 sigma) but deteriorate to 34 mas/yr for stars with inferior positions. NLTT is virtually 100% complete for V<11.5 and |b|>15 deg, but completeness in this magnitude range falls to about 75% at the Galactic plane. Incompleteness near the plane is not uniform, but is rather concentrated in the interval -80
Gould Andrew
Salim Samir
No associations
LandOfFree
Improved Astrometry and Photometry for the Luyten Catalog. I. Bright Stars 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 Improved Astrometry and Photometry for the Luyten Catalog. I. Bright Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improved Astrometry and Photometry for the Luyten Catalog. I. Bright Stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-382861