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Astron. Astrophys. 344, 154-162 (1999) AcknowledgementsWe would like to thank R. Stern and S. Skinner who provided us the Ginga and ASCA data. The ROSAT project is supported by the Max-Planck-Gesellschaft and Germany's federal government (BMBF/DLR). RN acknowledges grants from the Deutsche Forschungsgemeinschaft (Schwerpunktprogramm `Physics of star formation'). ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 1999 Online publication: March 10, 1999 ![]() |