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0V5 annually absolute magnitude analysis binaries bluer Bruce and Palomar Bruce Survey color f-g color H color H n color Pg columns give Components Degenerate Components criticism Weistrop Dec m color Degenerate Components color degenerate stars Designation RA 1950 determined double degenerates Eridani BC faint stars H n color high-velocity subdwarfs ignored by Weistrop indicated Known minus Lowell large numbers larger than 0'.'5 limiting magnitudes Lowell motions Lowell Proper Motions Luminosity Function Machine minus Lowell magnitudes and colors Main Sequence Components main-sequence star motions larger motions over 0V5 number of stars p s LP p s LP h m Palomar plates paper pg for stars photographic magnitudes plotted in Figure Proper Motion Survey published red dwarfs red stars reply Sequence Components Degenerate shown Solar Apex spectral class stars fainter stars of color stars with motions systematic differences systematically correct tangential velocities total number trigonometric parallaxes yellow degenerates zenith distance 17