2006/10/13 by J. E. G. Peek, M. E. Putman, Christopher F. McKee +3 · 4 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Astrophysics and Star Formation Studies #Drag #Galactic halo #Galaxies: Formation, Evolution, Phenomena #Halo #Halo orbit #Kinematics #Point cloud #astro-ph
paper · pdf · doi:10.1086/510189
published as Astrophys.J.656:907-913,2007 · 8 pages, 2 figures, 1 tabe, Accepted to ApJ
arxiv created 2006/10/13 · openalex publication_date 2007/02/14 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present Arecibo L-band Feed Array 21 cm observations of a subcomplex of HVCs at the tip of the anticenter complex. These observations show morphological details that point to interaction with the ambient halo medium and differential drag within the cloud subcomplex. We develop a new technique for measuring cloud distances, which relies on these observed morphological and kinematic characteristics, and show that it is consistent with Hα distances. These results are consistent with distances to HVCs and halo densities derived from models in which HVCs are formed from cooling halo gas.