Multisite, Multiwavelength Studies of the Active Cool Binary CC Eri |
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| Authors: | E Budding C Bembrick B D Carter N Erkan M Jardine S C Marsden R Osten P Petit M Semel O B Slee I Waite |
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| Institution: | (1) Carter Observatory, P.O. Box 2909, Wellington, New Zealand;(2) Physics Dept., 18th March University of Canakkale, Canakkale, Turkey;(3) Mt Tarana Observatory, PO Box 1537, Bathurst, NSW, 2795, Australia;(4) Centre for Astronomy, Solar Radiation and Climate, University of Southern Queensland, Baker St., Toowoomba, Qld., Australia;(5) School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife, Scotland;(6) Institute of Astronomy, ETHZ, 8092 Zurich, Switzerland;(7) National Radio Astronomy Observatory, Ivy Rd., Charlottesville, Virginia, USA;(8) Max Planck Institut für Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany;(9) LESIA, Observatoire de Meudon. 5, place Jules Jannsen, 92195 Paris, France;(10) Australia Telescope National Facility, Vimiera & Pembroke Rds., Marsfield, 2121, NSW, Australia |
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| Abstract: | New data acquired on the active, cool binary CC Eri ranged across the spectrum from Chandra X-ray to broadband photometry and microwave observations using the VLA and ATCA. Also, high-dispersion spectropolarimetry using the AAT enabled Zeeman-Doppler imaging to be performed. Our interpretations infer strong localised concentrations of the stellar magnetic field, manifested by surface activity and related large coronal plasma structures. Comprehensive matching of the modelling parameters awaits more detailed investigation.This brief interim review includes consideration of the ATCA data. Microwave radio emission is usually low level (‘quiescent’), but occasionally flares of several mJy peak intensity are observed. We associate the emission, generally, with wave-like mechanisms, expanding through the outer atmosphere. Related characteristics of this emission are discussed. |
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| Keywords: | Stars: activity Stars: coronae Stars: individual: CC Eri Radio continuum: stars Techniques: miscellaneous |
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