Magnetic Field Measurements on Late-Type Stars: A New Technique
نویسندگان
چکیده
منابع مشابه
Nonaxisymmetric magnetic field generation in rapidly rotating late-type stars
Abstract. Recently the discovery of the “flip-flop” phenomenon, by which a predominant “active” longitude jumps by about 180◦, on several rapidly rotating late-type stars has directed attention to the issues surrounding the presence of large-scale nonaxisymmetric magnetic fields in these objects. Here we study nonlinear mean field dynamo models with quasi-cylindrical rotation laws, acting in sp...
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Aims. We report the detection of a magnetic field on Vega through spectropolarimetric observations. Methods. We acquired 257 Stokes V, high signal-to-noise and high-resolution echelle spectra during four consecutive nights with the NARVAL spectropolarimeter at the 2-m Telescope Bernard Lyot of Observatoire du Pic du Midi (France). A circularly polarized signal in line profiles is unambiguously ...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1988
ISSN: 0074-1809
DOI: 10.1017/s007418090003518x