Post-Hipparcos Galactic distance scales.

Details Post-Hipparcos Galactic distance scales. Post-Hipparcos Galactic distance scales.

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pabei..17..159w&link_type=abstract

Prog. Astron., Vol. 17, No. 2, p. 159 - 167

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Distances: Open Clusters, Distance Scale: Galaxy

Scientific paper

A review about the distances of the Pleiades, the Hyades, and other nearby open clusters, which were determined based on the parallaxes and proper motions from the Hipparcos Catalogue and on previous ground-based observations, is given. It is noted that the problem about the distance of the Hyades has been settled. On the other hand, the distance of the Pleiades from Hipparcos is nearer about 10% than recent ground-based values. Furthermore, the distances of some other open clusters from Hipparcos are obviously divided two groups: the clusters Praesepe, Coma, Perseus and Blanco 1 determine a main sequence; otherwise, the clusters IC 2301 and IC 2602 with the Pleiades determine another main sequence. Comparison of the two main sequences shows the latter is fainter about 0.5 mag.

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