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Radial velocities. Measurements of 2800 B2-F5 stars for HIPPARCOS
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We present Stroemgren uvby and Hbeta_ photometry for a set of575 northern main sequence A type stars, most of them belonging to theHipparcos Input Catalogue, with V from 5mag to 10mag and with knownradial velocities. These observations enlarge the catalogue we began tocompile some years ago to more than 1500 stars. Our catalogue includeskinematic and astrophysical data for each star. Our future goal is toperform an accurate analysis of the kinematical behaviour of these starsin the solar neighbourhood.
| 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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Datos observacionales y astrométricos
| Constelación: | Orión |
| Ascensión Recta: | 05h09m24.92s |
| Declinación: | +03°06'26.6" |
| Magnitud Aparente: | 8.272 |
| Distancia: | 175.747 parsecs |
| Movimiento Propio en Ascensión Recta: | -11.2 |
| Movimiento Propio en Declinación: | -12.2 |
| B-T magnitude: | 8.474 |
| V-T magnitude: | 8.289 |
Catálogos y designaciones:
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