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Unstable wind of 6 Cassiopeiae

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Abstract

Propagation of discrete absorption components along the broad wind profiles of H and Fe II has been observed for the first time for a white hypergiant (6 Cas A2.5 Ia-0). CCD-echelle spectrometers of 6-m and 1-m telescopes of SAO RAS were used. The motion of the discrete components was traced for a period of 200 days in the 50 to 180 km s−1 interval of expansion velocity. The observed phenomenon is similar to that described for P Cygni. Corraboration of pulsations of 6 Cas has been obtained.

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  1. Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnij Arkhyz, Russia

    E. L. Chentsov

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  1. E. L. Chentsov
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Chentsov, E.L. Unstable wind of 6 Cassiopeiae. Astrophys Space Sci 232, 217–232 (1995). https://doi.org/10.1007/BF00658296

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  • DOI: https://doi.org/10.1007/BF00658296

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