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FIVE-COLOR PHOTOMETRY OF NEARBY RED DWARFS
A. R. UPGREN and S. J. KERRIDGE
Publications of the Astronomical Society of the Pacific
Vol. 85, No. 508 (December 1973), pp. 721-723
Published by: Astronomical Society of the Pacific
Stable URL: http://www.jstor.org/stable/40675466
Page Count: 3
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Photoelectric photometry is presented for 47 stars in the (R — I) color index on the Kron system and, for most of them, in standard UBV color indices as well. Almost all of the stars are nearby K and early M dwarfs selected from the McCormick lists, which have, or soon will have, a trigonometric parallax determined in the course of the astrometric program of the Van Vleck Observatory and which, with few exceptions, do not have previous photometry. This list is part of a larger program aiming at five-color photometry for all field stars and Hyades members on the astrometric program.
Publications of the Astronomical Society of the Pacific © 1973 The University of Chicago Press