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A study of some stars with circumstellar dust envelopes. I
We present the results of a study of circumstellar dust envelopes of 36stars of early(O-B-A) types in the directions of the associations CasOB1, Cas OB2, Per OB1, and Ori OB1. We determine the absorption at 1640Å, the linear radius of the dust envelopes, the mean value of thecoefficient k, and the masses of the envelopes. They differsignificantly from one another.
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Osservazione e dati astrometrici
| Costellazione: | Cassiopea |
| Ascensione retta: | 00h50m46.44s |
| Declinazione: | +58°44'39.9" |
| Magnitudine apparente: | 8.314 |
| Distanza: | 291.545 parsec |
| Moto proprio RA: | 18.2 |
| Moto proprio Dec: | -2.8 |
| B-T magnitude: | 8.369 |
| V-T magnitude: | 8.319 |
Cataloghi e designazioni:
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