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Parallaxes and proper motions of interstellar masers toward the Cygnus X star-forming complex. I. Membership of the Cygnus X region
K. L. J. Rygl, A. Brunthaler, A. Sanna +6
Whether the Cygnus X complex consists of one physically connected region of star formation or of multiple independent regions projected close together on the sky has been debated f…
Distribution and excitation of thermal methanol in 6.7 GHz maser bearing star-forming regions; I. The nearby source Cepheus A
Karl J. E. Torstensson, Floris F. S. van der Tak, Huib Jan van Langevelde +2
The aim of this study is to investigate the distribution and excitation of the methanol gas around Cep A and to describe the physical conditions of the region. In addition the larg…
The magic of disc-worlds: non-rotating methanol masers
Huib Jan van Langevelde, Karl J. E. Torstensson, Anna Bartkiewicz +4
In recent studies of methanol masers, a substantial fraction of the objects show maser components aligned in large-scale elliptical configurations. These can be readily interpreted…