276 citations · 1k across the 15 of their papers we have counts for
9 papers · 1 filter
The Large Adaptive Reflector concept
S. M. Dougherty, P. E. Dewdney, A. Gray +1
Cost effective, new antenna technology is required to build the large collecting area being planned for the next generation of radio telescopes. The Large Adaptive Reflector (LAR)…
An Automated Method for the Detection and Extraction of HI Self-Absorption in High-Resolution 21cm Line Surveys
Steven J. Gibson, A. Russell Taylor, Lloyd A. Higgs +2
We describe algorithms that detect 21cm line HI self-absorption (HISA) in large data sets and extract it for analysis. Our search method identifies HISA as spatially and spectrally…
A Self-Absorption Census of Cold HI Clouds in the Canadian Galactic Plane Survey
Steven J. Gibson, A. Russell Taylor, Lloyd A. Higgs +2
We present a 21cm line HI self-absorption (HISA) survey of cold atomic gas within Galactic longitudes 75 to 146 degrees and latitudes -3 to +5 degrees. We identify HISA as spatiall…
The Peculiar Nebula Simeis 57: I. Ionized Gas and Dust Extinction
F. P. Israel, M. Kloppenburg, P. E. Dewdney +1
We present high resolution radio continuum maps of the Galactic nebula Simeis 57 (= HS 191 = G 80.3+4.7) made with the WSRT and the DRAObservatory at frequencies of 609, 1412 and 1…
The Synthesis Telescope at the Dominion Radio Astrophysical Observatory
T. L. Landecker, P. E. Dewdney, T. A. Burgess +13
We describe an aperture synthesis radio telescope optimized for studies of the Galactic interstellar medium (ISM), providing the ability to image extended structures with high angu…
The HI shell G132.6-0.7-25.3: A Supernova Remnant or an Old Wind-Blown Bubble?
Magdalen Normandeau, A. R. Taylor, P. E. Dewdney +1
Data from the Canadian Galactic Plane Survey reveal an abundance of HI shells and arcs in the disk of our galaxy. While their shape is suggestive of stellar winds or supernovae inf…