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Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.
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Four seasons of photometry for three premain-sequence Herbig Be stars(HD 53367, HD 200775, and HD 259431) are presented. Only one star (HD53367) has been found to be optically variable, having uniformlydeclined in V magnitude and decreased in (B-V) over that time period.H-alpha spectra are discussed for HD 53367 and HD 200775.
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The present catalog, compiled at the Abastumani Observatory, contains BVmagnitudes and spectral classes of about 6000 stars up to V(lim) = 13.0min five circular areas of 18 sq deg located near the salactic-equatorplane. The catalog is intended for star-statistics studies ofstar-formation regions.
| The distribution of stars and obscuring matter in a Monoceros field
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972A&AS....7...35K&db_key=AST
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Datos observacionales y astrométricos
| Constelación: | Unicornio |
| Ascensión Recta: | 06h33m38.07s |
| Declinación: | +10°01'17.1" |
| Magnitud Aparente: | 9.384 |
| Movimiento Propio en Ascensión Recta: | 1.8 |
| Movimiento Propio en Declinación: | -4.7 |
| B-T magnitude: | 9.339 |
| V-T magnitude: | 9.381 |
Catálogos y designaciones:
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