IALP 13078
INSTITUTO DE ASTROFISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
On the origin of the wind variability of 55 Cyg.
Autor/es:
HAUCKE, M.; KRAUS, M.; VENERO, R.; CIDALE, L.; NICKELER, D.; TOMIC, S.
Lugar:
Florianópolis
Reunión:
Congreso; XIV Reunión Regional Latinoamerica de Astronomía; 2013
Institución organizadora:
IAU
Resumen:
The early B-type supergiant 55 Cygni exhibits pronounced night-to-night variations in its P-Cygni line profiles (mainly in Hα and Hβ) related to the presence of a strong variable stellar wind. In this work we studied a sample of spectroscopic observations of 55 Cygni, taken at the Observatory of Ondrejov (Czeck Republic), in order to analyze the variation of the wind parameters. Observations were modelled using FASTWIND code (Santolaya-Rey, Puls & Herrero 1997,A&A 323, 488-512). We discuss plausible mechanisms leading to the variable nature of this wind.
