VBLI observations of high-velocity H2O emission in W49 N

Details VBLI observations of high-velocity H2O emission in W49 N VBLI observations of high-velocity H2O emission in W49 N

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...211l.135w&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 211, Feb. 1, 1977, p. L135-L138. NSF-supported research.

Astronomy and Astrophysics

Astronomy

35

Interstellar Masers, Microwave Emission, Protostars, Radial Velocity, Radio Astronomy, Water Masers, Hydrogen Clouds, Interstellar Gas, Microwave Interferometers, Synthetic Arrays

Scientific paper

Very long baseline interferometer (VBLI) observations over a 3547-km baseline have been used to map relative positions of H2O emission features over a wide range of velocity in W49 N. The features mapped can be divided spatially into several groups. Every group that contains high-velocity features also contains low-velocity features. Within each group, the high-velocity features are spread over a greater area than the low-velocity features, contrary to predictions of models of the high-velocity emission involving material being blown outward from a protostar into a surrounding cloud.

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