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Browsing by Author "Jardine, M."
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Can the magnetic topology of AB Doradus be explained by a potential field distribution
Hussain, G.A.J.; Jardine, M.; Collier Cameron, A.; Barnes, J.R.; Donati, J-F. (Astronomical Society of the Pacific, 2000)We present potential magnetic field maps of the surface of the active KO dwarf, AB Dor. Maps of the surface magnetic flux distributions of rapid rotators can be produced using the technique of Zeeman Doppler imaging (ZDI). ... -
The coronal structure of Speedy Mic - I. A densely packed prominence system beyond corotation
Dunstone, N.J.; Barnes, J.R.; Collier Cameron, A.; Jardine, M. (2006)We present new observations of the prominence system on the K3 dwarf Speedy Mic (BO Mic, HD 197890). Using an improved technique to track the absorption features in Hα we find a very active prominence system with approximately ... -
The coronal structure of Speedy Mic - II: Prominence masses and off-disc emission
Dunstone, N.J.; Collier Cameron, A.; Barnes, J.R.; Jardine, M. (2006)Observations of stellar prominences on young rapidly rotating stars provide unique probes of their magnetic fields out to many stellar radii. We compare two independently obtained datasets of the K3 dwarf Speedy Mic (BOMic, ... -
Differential rotation on both components of the pre main-sequence binary system HD 155555
Dunstone, N.J.; Hussain, G.A.J.; Collier Cameron, A.; Marsden, S.C.; Jardine, M.; Barnes, J.R.; Ramirez Vlex, J.C.; Donati, J-F. (2008) -
Prominences on Rapidly-Rotating Solar-Type Stars
Jardine, M.; Barnes, J.R.; Unruh, Y.C.; Collier Cameron, A. (Astronomical Society of the Pacific, 1998)We present Ha observations of two rapidly-rotating G2 dwarfs in the Alpha Persei cluster and of AB Dor, a young K0 dwarf. -
The surprising magnetic topology of t Sco: fossil remnant or dynamo output
Donati, J-F.; Howarth, I.D.; Jardine, M.; Petit, P.; Catala, C.; Landstreet, J.D.; Bouret, J-C.; Alecian, E.; Barnes, J.R.; Forveille, T.; Paletou, F.; Manset, N. (2006)