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1994PASP..106..462R - Publ. Astron. Soc. Pac., 106, 462-471 (1994/May-0)
MV=MV(log P, log Te) calibrations for W Ursae Majoris systems.
RUCINSKI S.M.
Abstract (from CDS):
The calibrating sample at this time is based on 3 systems with trigonometric parallaxes, 11 systems in high galactic latitude open clusters and 3 systems with main-sequence visual companions. The ranges in period and color are quite narrow and the results must be considered as preliminary, especially for the V-I_C calibration.
One of the possible applications of the calibrations, as a sieve to remove the foreground interlopers, is illustrated. The result is that the cluster and field frequencies of optically detected W UMa systems seem to be equal at about one per about 280 surveyed stars (uncorrected for the inclination bias of about two times), which is about 3-4 times higher in the field than estimated before.
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Simbad objects: 20
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