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Radial-velocity measurements. V - Ground support of the HIPPARCOS satellite observation program The paper presents data on 1070 radial velocity measurements of starsdistributed in 39 fields measuring 4 deg x 4 deg. The PPO series ofFehrenbach et al. (1987) and Duflot et al. (1990) is continued using theFehrenbach objective prism method.
| The local interstellar medium and soft local X-ray radiation The nature of the soft local X-ray radiation is discussed. The questionof whether the radiation originates from a local bubble, a number ofnonlocal bubbles, or the Galactic corona is examined. Attention is givento Rosat findings and to the known characteristics of the Dracomolecular cloud, the Hercules H I shell, and the Hercules field.
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Datos observacionales y astrométricos
Constelación: | Dragón |
Ascensión Recta: | 16h44m17.56s |
Declinación: | +60°58'14.5" |
Magnitud Aparente: | 7.89 |
Distancia: | 148.588 parsecs |
Movimiento Propio en Ascensión Recta: | -3 |
Movimiento Propio en Declinación: | 12.5 |
B-T magnitude: | 8.054 |
V-T magnitude: | 7.904 |
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