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Prevalence of SED turndown among classical Be stars: Are all Be stars close binaries?
Robert Klement, A. C. Carciofi, T. Rivinius +16
Rapid rotation is a fundamental characteristic of classical Be stars and a crucial property allowing for the formation of their circumstellar disks. Past evolution in a mass and an…
Vibrationally excited water emission at 658 GHz from evolved stars
A. Baudry, E. M. L. Humphreys, F. Herpin +6
Several rotational transitions of water have been identified toward evolved stars in the ground vibrational state as well as in the first excited state of the bending mode. In the…
Simultaneous 183 GHz H2O Maser and SiO Observations Towards Evolved Stars Using APEX SEPIA Band 5
E. M. L. Humphreys, K. Immer, M. D. Gray +10
We investigate the use of 183 GHz H2O masers for characterization of the physical conditions and mass loss process in the circumstellar envelopes of evolved stars. We used APEX SEP…
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…