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Circular Polarization of Water Masers in the Circumstellar Envelopes of Late Type Stars
W. H. T. Vlemmings, P. J. Diamond, H. J. van Langevelde
We present circular polarization measurements of circumstellar H_2O masers. The circular polarization detected in the (6_{16}-5_{23}) rotational transition of the H_{2}O maser can…
How is really decelerating the expansion of SN1993J?
J. M. Marcaide, A. Alberdi, M. A. Perez-Torres +14
SN1993J is to date the radio supernova whose evolution has been monitored in greatest detail and the one which holds best promise for a comprehensive theoretical-observational anal…
Numerical simulations of stellar SiO maser variability. Investigation of the effect of shocks
E. M. L. Humphreys, M. D. Gray, J. A. Yates +3
A stellar hydrodynamic pulsation model has been combined with a SiO maser model in an attempt to calculate the temporal variability of SiO maser emission in the circumstellar envel…
Strongly decelerated expansion of SN1979C
J. M. Marcaide, M. A. Perez-Torres, E. Ros +6
We observed SN1979C in M100 on 4 June 1999, about twenty years after explosion, with a very sensitive four-antenna VLBI array at the wavelength of 18cm. The distance to M100 and th…