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ROSAT All-Sky Survey Observations of the Hyades Cluster
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1995ApJ...448..683S&db_key=AST
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The Henry Draper Extension Charts (HDEC), published in the form offinding charts, provide spectral classification for some 87000 starsmostly between 10th and 11th magnitude. This data, being highlyvaluable, as yet was practically unusable for modern computer-basedastronomy. An earlier pilot project (Roeser et al. 1991) demonstrated apossibility to convert this into a star catalogue, using measurements ofcartesian coordinates of stars on the charts and positions of theAstrographic Catalogue (AC) for subsequent identification. We presenthere a final HDEC catalogue comprising accurate positions, propermotions, magnitudes and spectral classes for 86933 stars of the HenryDraper Extension Charts.
| Photometry of possible members of the Hyades cluster. V
Photoelectric BVRI observations have been obtained for 36 starssuspected of being members of the Hyades cluster, mostly on the basis ofthe proper-motion survey by Artyukhina and Kholopov. Most of the starsare in the outer regions of the cluster and, on the basis of thephotometry, only six of the 36 stars appear to be possible or probablemembers. This illustrates the difficulty of identifying outlying clustermembers on the basis of proper-motion measures alone.
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Membre dels grups següents:
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Dades d'Observació i Astrometria
| Constel·lació: | Taurus |
| Ascensió Recta: | 04h59m49.51s |
| Declinació: | +19°58'00.3" |
| Magnitud Aparent: | 9.727 |
| Moviment propi RA: | 65.1 |
| Moviment propi Dec: | -25.5 |
| B-T magnitude: | 10.643 |
| V-T magnitude: | 9.803 |
Catàlegs i designacions:
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