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Hyades and Sirius supercluster members brighter than magnitude(V) 7.1. I - The first six hours of right ascension
This is the first of four papers listing the probable members of theHyades and Sirius superclusters among stars brighter than V = 7.1 mag.The star sample is contained in the Bright Star Catalogue and itsSupplement, augmented with a further supplement of 550 stars foundduring various observing programs over the past 40 years. Accurate,four-color and H-beta, or (RI), photometry is available for most of thesupercluster members. The criteria for membership are the comparisons ofthe proper motion, radial velocity, and luminosity obtained from thesupercluster parameters with the observed motions and the luminosityderived from the photometric parameters. New proper motions, based onall available catalogs, have been derived for the additional 550 starsdiscussed here, as well as for all supercluster members.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Irmak |
| Sað Açýklýk: | 04h07m29.27s |
| Yükselim: | -06°00'26.6" |
| Görünürdeki Parlaklýk: | 6.906 |
| Uzaklýk: | 131.579 parsek |
| özdevim Sað Açýklýk: | -3.7 |
| özdevim Yükselim: | 21.3 |
| B-T magnitude: | 7.073 |
| V-T magnitude: | 6.92 |
Kataloglar ve belirtme:
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