Magnetic survey of emission line B-type stars with FORS 1 at the VLT
نویسندگان
چکیده
منابع مشابه
Magnetic field measurements of O stars with FORS 1 at the VLT ⋆
Context. The presence of magnetic fields in O-type stars has been suspected for a long time. The discovery of such fields would explain a wide range of well documented enigmatic phenomena in massive stars, in particular cyclical wind variability, Hα emission variations, chemical peculiarity, narrow X-ray emission lines and non-thermal radio/X-ray emission. Aims. To investigate the incidence of ...
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To properly understand the physics of Ap and Bp stars it is particularly important to identify the origin of their magnetic fields. For that, an accurate knowledge of the evolutionary state of stars that have a measured magnetic field is an important diagnostic. Previous results based on a small and possibly biased sample suggest that the distribution of magnetic stars with mass below 3M⊙ in th...
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Wolf-Rayet (WR) stars are the chemically evolved descendents of O stars, such that they trace massive star formation. Here we present results of recent VLT/FORS surveys of WR stars in near by spiral and irregular galaxies and consider individual WR stars as progenitors of Type Ib/c core-collapse supernovae. Young massive clusters hosting large WR populations may be used as templates for high-re...
متن کاملOn the incidence of magnetic fields in slowly-pulsating B, β Cephei and B-type emission line stars
We have obtained 40 high-resolution circular spectropolarimetric measurements of 12 slowly-pulsating B (SPB) stars, 8 β Cephei stars and two Be stars with the ESPaDOnS and NARVAL spectropolarimeters. The aim of these observations is to evaluate recent claims of a high incidence of magnetic field detections in stars of these types obtained using low-resolution spectropolarimetry by Hubrig et al....
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 2009
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.200911236