Stars with zero proper motion and the number of faint QSOs

Details Stars with zero proper motion and the number of faint QSOs Stars with zero proper motion and the number of faint QSOs

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..397k&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 93, Aug.-Sept. 1981, p. 397-404.

Other

63

Quasars, Star Distribution, Stellar Motions, Stellar Spectrophotometry, Color, Stellar Magnitude, Stellar Spectra, Variable Stars

Scientific paper

The field of SA 57 is surveyed for faint QSOs by studying the properties of stars which lack detectable proper motion. In principle, the method is capable of avoiding selection effects intrinsic to other search techniques. The zero-proper-motion criterion is generally successful, but all of the QSOs that have been studied would have been found with some other conventional technique, so that evidently no significant population of stellar-appearing extragalactic objects has remained undiscovered. After combining the results of several techniques, a surface density of QSOs is obtained which supersedes, but is completely consistent with, the previous point on the log N-m diagram at B = 21.4.

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