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Rotational velocity of Be stars correlated with emission characteristics
A sample of shell and nonshell B0e-B5e stars with weak and strongemission, and shell and nonshell B6e-B9e stars with weak emission, arestudied to seek a correlation between the rotational velocity of Bestars and the emissive strength. These results and the distributions ofV sin i indicate that the hottest Be stars, B0e-B5e, with rotationalvelocities of about 345 km/s can develop the characteristics of strongemission. For stars which are slightly less hot, or stars with slightlysmaller rotational velocities, only characteristics of weak emission canbe developed, and the shell characteristics only develop when the staris viewed at a greater-than-33-deg inclination to the pole. It is alsonoted that stars with large rotational velocities, the strong-emissionB0e-B5e and weak-emission B6e-B9e stars, can show metallic shellcharacteristics when seen near the equatorial plane.
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Наблюдательные данные и астрометрия
| Созвездие: | Часы |
| Прямое восхождение: | 03h18m03.79s |
| Склонение: | -52°51'21.3" |
| Видимая звёздная величина: | 9.212 |
| Собственное движение RA: | 6.7 |
| Собственное движение Dec: | -6.1 |
| B-T magnitude: | 10.429 |
| V-T magnitude: | 9.313 |
Каталоги и обозначения:
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