| Autre titre | Observations of OMI AND. III. A model |
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| DOI | Trouver le DOI : https://doi.org/10.1086/130946 |
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| Auteur | Rechercher : Poeckert, R.1; Rechercher : Gulliver, A. F.; Rechercher : Marlborough, J. M. |
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| Affiliation | - Conseil national de recherches du Canada. Institut Herzberg d'astrophysique du CNRC
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| Format | Texte, Article |
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| Sujet | shell star; emission-line star |
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| Résumé | We present a model for the Be star o And which attempts to account for the observed spectroscopic, photometric, and polarimetric changes during the recent shell episode. The model suggests that the waning of the shell was a two-phased process. The initial phase was one in which the density in the inner regions of the circumstellar envelope decreased resulting in a decrease in polarization. Subsequently, the density in the outer regions decreased resulting in the fading of the shell absorption lines. A simple model in which the expansion velocity is independent of time and the mass-loss rate decreases, resulting in a density decrease which propagates outward, fails to satisfy the observed changes in o And. A more complex scenario which does fit the data is proposed. |
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| Date de publication | 1982-02 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | NRCC 20241 |
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| Numéro NPARC | 5329859 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | c346c243-f74c-4e92-8e22-ae777888f423 |
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| Enregistrement créé | 2009-01-09 |
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| Enregistrement modifié | 2021-05-26 |
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