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Red-shifted H2O emission in NGC 3079: More evidence for a pc-scale circumnuclear torus?
Astronomy and Astrophysics
Using the Effelsberg 100-m telescope, sensitive measurements of the H2O megamaser in NGC 3079 are presented. During 2000 - 2001, 'high velocity' features are seen that are red-shifted up to 225 km/s with respect to the systemic velocity of the galaxy (about 1120 km/s). Symmetrically bracketing the systemic velocity, the H2O emission covers a velocity range of 450 km/s with only one potential narrow gap (20 km/s) near the systemic velocity itself. Velocity drifts of individual components are notdoi:10.1051/0004-6361:20020508 fatcat:mtkwvtplmrbkhm6vvh6cvmzune