22 citations · 53 across the 5 of their papers we have counts for
5 papers
A MERLIN Study of 6 GHz Excited-state OH & 6.7 GHz Methanol Masers in ON1
J. A. Green, A. M. S. Richards, W. H. T. Vlemmings +2
MERLIN observations of 6.668-GHz methanol and both 6.031- and 6.035-GHz hydroxyl (OH) emission from the massive star-formation region ON1 are presented. These are the first methano…
Intrinsic properties of the magnetically collimated water maser jet of W43A
W. H. T. Vlemmings, P. J. Diamond
Water maser polarization observations in the precessing jet of W43A have revealed that it is magnetically collimated. Here we present a detailed description of the physical propert…
Hidden bipolarity in red supergiant winds
A. M. S. Richards, M. R. W. Masheder, H. J. van Langevelde +7
Many observations of late-type M stars show large near-spherical circumstellar envelopes, yet planetary nebulae and supernova remnants are frequently axisymmetric. We present VLBI…
Astrometry of the stellar image of U Her amplified by the circumstellar 22 GHz water masers
W. H. T. Vlemmings, H. J. van Langevelde, P. J. Diamond
The 22 GHz H_2O masers in the circumstellar envelope of the Mira variable star U Her have been observed with MERLIN using a phase referencing technique to determine accurate astrom…
Magnetic Fields in the envelopes of late-type stars: Circular Polarization of H2O Masers
W. H. T. Vlemmings, P. J. Diamond, H. J. van Langevelde
We present the first circular polarization measurements of circumstellar water masers around a sample of late-type stars. These observations are used to obtain the magnetic field s…