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Astron. Astrophys. 362, 105-112 (2000) AcknowledgementsThe ROSAT project is supported by the Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie (BMBF) and the Max-Planck-Gesellschaft. Part of this work was done in the TMR research network `Accretion onto black holes, compact stars and protostars' funded by the European Commission under contract number ERBFMRX-CT98-0195. CMU acknowledges support from NASA grant NAG5-3313. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 2000 Online publication: October 30, 19100 ![]() |