Abstract
view Abstract Citations (39) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Sirius group as a moving supercluster. Eggen, O. J. Abstract Without use of trigonometric parallaxes, the distances of some 50 bright stars have been determined on the basis of their well-determined proper motions and membership in a supercluster that includes Sirius. The astrometric parallaxes are in excellent agreement with those obtained from photometric parameters and, for the stars within 40 pc of the sun, they are also in agreement with trigonometric determinations. The supercluster stars are near 2.4 x 10 to the 8th yr old with (Fe/H) near -0.1. The resulting color-luminosity array confirms the expected main-sequence displacement for stars with a metal abundance only about two thirds that of the Hyades supercluster members. The supercluster contains the UMa cluster and M39 (NGC 7092) but the former, at least, has only attracted attention because of the concentration of a few bright (Dipper) supercluster members in Ursa Major. Publication: The Astronomical Journal Pub Date: May 1983 DOI: 10.1086/113352 Bibcode: 1983AJ.....88..642E Keywords: Astrometry; Star Clusters; Stellar Motions; Distance; Stellar Color; Stellar Luminosity; Tables (Data); Astronomy full text sources ADS | data products SIMBAD (72)
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