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Pulkovo compilation of radial velocities for 35495 stars in a common system.
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| Is the Be star HR 9070 actually pulsating?
New photometric observations on the short-period Be variable HR 9070 arepresented which show that the light maxima can be predicted by a givenephemeris. Analysis using a 0.3-day period or a double-wave 0.6-dayperiod curve results in the same rms error, hence equal probabilities.Spectrography suggests large RV discontinuities in the components ofH-alpha, superimposed on smooth variations possibly correlated with theshortest period. Depending on the actual solution, pulsation or rotationmay be invoked. The shortest periodic Be stars show periods longer thanthe classical Beta CMa pulsating variables, so unusual pulsation modesshould be considered. If rotation of a star with spots on its surfaceaccounts for the variations, an exclusion mechanism between Beta CMa andBe phenomena must exist, probably as a function of rotation.
| Errata in Magnitudes of Stars in AGK3
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Datos observacionales y astrométricos
| Constelación: | Andrómeda |
| Ascensión Recta: | 00h09m27.58s |
| Declinación: | +46°23'16.4" |
| Magnitud Aparente: | 7.16 |
| Distancia: | 201.613 parsecs |
| Movimiento Propio en Ascensión Recta: | 9.7 |
| Movimiento Propio en Declinación: | -12.2 |
| B-T magnitude: | 7.2 |
| V-T magnitude: | 7.164 |
Catálogos y designaciones:
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