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Title:
The Solar Neighborhood. XII. Discovery of New High Proper Motion Stars with μ >= 0.4" yr-1 between Declinations -90° and -47°
Authors:
Subasavage, John P.; Henry, Todd J.; Hambly, Nigel C.; Brown, Misty A.; Jao, Wei-Chun
Affiliation:
AA(Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30302-4106), AB(Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30302-4106), AC(Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK), AD(Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30302-4106), AE(Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30302-4106)
Publication:
The Astronomical Journal, Volume 129, Issue 1, pp. 413-432. (AJ Homepage)
Publication Date:
01/2005
Origin:
UCP
Astronomy Keywords:
Galaxy: Solar Neighborhood, Stars: Distances, Stars: Statistics
DOI:
10.1086/426334
Bibliographic Code:
2005AJ....129..413S

Abstract

We report the discovery of 141 new high proper motion systems (μ>=0.4" yr-1) in the southern sky (δ=-90deg to -47°) brighter than UKST plate R59F=16.5 via our SuperCOSMOS-RECONS search. When combined with the nine systems having μ>=1.0" yr-1 and/or late spectral type from the initial phases of this effort, we find that 73 of the 150 total systems are moving faster than 0.5" yr-1 and are therefore new members of the classic Luyten Half-Second sample. These constitute a 21% increase in the sample of stars with μ>=0.5" yr-1 in the declination region searched, thereby comprising an important addition to this long-neglected region of the sky. Distance estimates are provided for the entire sample, based on a combination of photographic plate magnitudes and Two Micron All Sky Survey photometry, using the relations recently presented by Hambly et al. for the presumed main-sequence stars. Three systems are anticipated to be within 10 pc, and an additional 15 are within 25 pc. Nine of these 18 nearby systems have proper motions falling between 0.4" and 0.6" yr-1, hinting at a large population of nearby stars with fast, but not extremely high, proper motions that have not been thoroughly investigated.

Associated Articles

Part 1     Part  2     Part  3     Part  4     Part  5     Part  6     Part  7     Part  8     Part  9     Part 10     Part 11     Part 12     Part 13     Part 14     Part 15     Part 16     Part 17     Part 18     Part 19     Part 20     Part 21     Part 22     Part 23    

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