Reconstructing Deconstruction: High-Velocity Cloud Distance Through Disruption Morphology

Details Reconstructing Deconstruction: High-Velocity Cloud Distance Through Disruption Morphology Reconstructing Deconstruction: High-Velocity Cloud Distance Through Disruption Morphology

2006-10-13

arxiv.org/abs/astro-ph/0610429v1

Astrophys.J.656:907-913,2007

Astronomy and Astrophysics

Astrophysics

8 pages, 2 figures, 1 tabe, Accepted to ApJ

Scientific paper

10.1086/510189

We present Arecibo L-band Feed Array 21-cm observations of a sub-complex of HVCs at the tip of the Anti-Center Complex. These observations show morphological details that point to interaction with the ambient halo medium and differential drag within the cloud sub-complex. We develop a new technique for measuring cloud distances, which relies upon these observed morphological and kinematic characteristics, and show that it is consistent with H-alpha distances. These results are consistent with distances to HVCs and halo densities derived from models in which HVCs are formed from cooling halo gas.

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