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Title:
The APM Proper Motion Project. I - High proper motion stars
Authors:
Evans, Dafydd W.
Affiliation:
AA(Cambridge University Institute of Astronomy, England)
Publication:
Royal Astronomical Society, Monthly Notices (ISSN 0035-8711), vol. 255, April 1, 1992, p. 521-538. Research supported by SERC. (MNRAS Homepage)
Publication Date:
04/1992
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
ASTRONOMICAL PHOTOMETRY, STELLAR LUMINOSITY, STELLAR MOTIONS, WHITE DWARF STARS, ASTRONOMICAL CATALOGS, STAR DISTRIBUTION
Bibliographic Code:
1992MNRAS.255..521E

Abstract

Results are presented on a subset of proper motion data with absolute value of mu greater than about 0.04 arcsec/yr from the APM Proper Motion Project. Comparisons made with the NLTT catalog show that the levels of contamination and in completeness in this catalog are consistent with the random measuring errors in the proper motions. No signficant zero-point offset is found in the NLTT proper motions with respect to that defined by galaxies. Reduced proper motions in the four fields studied are found to be very effective in distinguishing between various stellar populatinos when combined with color information. The kinematic properties of these populations are investigated. From the white dwarf sample, a luminosity function is derived which is in very good agreement with that of Liebert, Dahn, and Monet.

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