The XMM-Newton view of stellar coronae: Coronal structure in the Castor X-ray triplet M. Güdel, M. Audard, H. Magee, E. Franciosini, N. Grosso, F. A. Cordova, R. Pallavicini and R. Mewe A&A, 365 1 (2001) L344-L352 Published online: 15 January 2001 DOI: 10.1051/0004-6361:20000040