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Absolute proper motions of open clusters. I. Observational data
Mean proper motions and parallaxes of 205 open clusters were determinedfrom their member stars found in the Hipparcos Catalogue. 360 clusterswere searched for possible members, excluding nearby clusters withdistances D < 200 pc. Members were selected using ground basedinformation (photometry, radial velocity, proper motion, distance fromthe cluster centre) and information provided by Hipparcos (propermotion, parallax). Altogether 630 certain and 100 possible members werefound. A comparison of the Hipparcos parallaxes with photometricdistances of open clusters shows good agreement. The Hipparcos dataconfirm or reject the membership of several Cepheids in the studiedclusters. Tables 1 and 2 are only available in electronic form at theCDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
| UBV photometry of stars whose positions are accurately known. II
The present report on the UBV observations of stars with favorableastrometric history gives attention to stars of the BD zones lyingbetween 50 and 54 deg. These observations and their reductions wereperformed from August 1983 to August 1984, as described by Oja (1984).Results are presented as tables for both the standard stars and theprogram stars. Comparisons are conducted between the present Vmagnitudes and those of the NPZT (1982) and AGK3R (1978) catalogs.
| An investigation of radius anomalies among short-period Cepheids
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| Osservazioni fotografiche di stelle variabili in Cassiopea (KR, KL, IY, TU, UW, HI, GZ, HH Cassiopeiae)
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Membro dei seguenti gruppi:
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Osservazione e dati astrometrici
| Costellazione: | Cassiopea |
| Ascensione retta: | 00h32m34.37s |
| Declinazione: | +51°06'13.3" |
| Magnitudine apparente: | 8.277 |
| Distanza: | 529.101 parsec |
| Moto proprio RA: | 14.2 |
| Moto proprio Dec: | -6.3 |
| B-T magnitude: | 8.6 |
| V-T magnitude: | 8.304 |
Cataloghi e designazioni:
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