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The positions in right ascension of 3387 stars belonging to the Santiago67 Catalogue, observed with the Repsold Meridian Circle at Cerro Calan,National Astronomical Observatory, during the period 1989 to 1994, aregiven. The average mean square error of a position, for the wholeCatalogue, is +/-0.009 s. The mean epoch of the catalogue is 1991.84.
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B- and A-type stars in and near the Sco-Cen OB association areinvestigated with UBV and H-beta photometry to acquire data relevant tothe luminosity function of Sco-Cen. The measurements generally consistof two 10-s integrations of U, B, V, (W, N) filters, and theobservations are corrected iteratively for atmospheric extinction andinstrumental response. The data presented give the mean V magnitude,mean B-V, mean U-B, and the estimated uncertainties for these values.The catalog provides a homogeneous catalog of data for a large fieldwith stellar objects delineating membership to the association Sco-Cenand that affect the luminosity function of the aggregate.
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| Four-colour and H-beta photometry for early type stars in three southern galactic regions
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980A&AS...41...85L&db_key=AST
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Datos observacionales y astrométricos
| Constelación: | Libra |
| Ascensión Recta: | 15h35m40.35s |
| Declinación: | -26°18'03.9" |
| Magnitud Aparente: | 8.803 |
| Distancia: | 2702.703 parsecs |
| Movimiento Propio en Ascensión Recta: | -0.1 |
| Movimiento Propio en Declinación: | -2.8 |
| B-T magnitude: | 8.964 |
| V-T magnitude: | 8.817 |
Catálogos y designaciones:
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