P. W. Riley
University of Kent
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Featured researches published by P. W. Riley.
Giant Molecular Clouds in the Galaxy#R##N#Third Gregynog Astrophysics Workshop | 1980
L. T. Little; G. J. White; P. W. Riley
The strong water-line sources W3OH, Orion A, W49N and W51S have been monitored over the period 1974 September - 1976 October. Variations on a variety of timescales from years to days have been observed. W49 and W51S exhibit more rapid variations than W30H or Orion A. A comparison of the present results with those of Sullivan during 1969-70 suggests that the flux from the main components of W49 has systematically decreased, whereas that from W51 has systematically in creased in the 5-yr interval between the two sets of observations. This fact is best explained if there are changes in the flux of radiation from a common exciting object, incident on all of the masing components. High-velocity features in W49 have on two occasions been brighter than any of the main components, supporting a Doppler shift rather than scattering explanation for their origin.
Monthly Notices of the Royal Astronomical Society | 1979
L. T. Little; G. H. Macdonald; P. W. Riley; D. N. Matheson
Monthly Notices of the Royal Astronomical Society | 1977
L. T. Little; G. J. White; P. W. Riley
Monthly Notices of the Royal Astronomical Society | 1978
L. T. Little; P. W. Riley; G. H. Macdonald; D. N. Matheson
Monthly Notices of the Royal Astronomical Society | 1978
L. T. Little; G. H. Macdonald; P. W. Riley; D. N. Matheson
Monthly Notices of the Royal Astronomical Society | 1983
L. T. Little; A. T. Brown; P. W. Riley; N. Matthews; G. H. Macdonald; D. Vizard; R. J. Cohen
Monthly Notices of the Royal Astronomical Society | 1981
G. H. Macdonald; L. T. Little; A. T. Brown; P. W. Riley; D. N. Matheson; M. Felli
Monthly Notices of the Royal Astronomical Society | 1980
L. T. Little; A. T. Brown; G. H. Macdonald; P. W. Riley; D. N. Matheson
Monthly Notices of the Royal Astronomical Society | 1979
L. T. Little; G. H. Macdonald; P. W. Riley; D. N. Matheson
Monthly Notices of the Royal Astronomical Society | 1977
L. T. Little; P. W. Riley; D. N. Matheson
