Magnetic survey of emission line B-type stars with FORS1 at the VLT
Autor: | Hubrig, S., Schoeller, M., Savanov, I., Yudin, R. V., Pogodin, M. A., Stefl, St., Rivinius, Th., Cure, M. |
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Rok vydání: | 2009 |
Předmět: | |
Druh dokumentu: | Working Paper |
DOI: | 10.1002/asna.200911236 |
Popis: | We report the results of our search for magnetic fields in a sample of 16 field Be stars, the binary emission-line B-type star upsilon Sgr, and in a sample of fourteen members of the open young cluster NGC3766 in the Carina spiral arm. The sample of cluster members includes Be stars, normal B-type stars and He-strong/He-weak stars. Nine Be stars have been studied with magnetic field time series obtained over ~1 hour to get an insight into the temporal behaviour and the correlation of magnetic field properties with dynamical phenomena taking place in Be star atmospheres. The spectropolarimetric data were obtained at the European Southern Observatory with the multi-mode instrument FORS1 installed at the 8m Kueyen telescope. We detect weak photospheric magnetic fields in four field Be stars, HD62367, mu Cen, o Aqr, and epsilon Tuc. The strongest longitudinal magnetic field, Comment: 9 pages, 8 figures, 3 tables, accepted for publication in Astronomische Nachrichten |
Databáze: | arXiv |
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