The Canadian Galactic Plane Survey

S. Gibson, A.R. Taylor, D. Leahy, & S. Dougherty (University of Calgary);
C. Carignan, & N. St-Louis (Université de Montréal);
M. Fich (University of Waterloo);
N. Ghazzali, G. Joncas, S. Pineault & M. Normandeau (Université Laval);
C. Heiles (University of California);
J. Irwin, & J. English (Queen's University);
P. Martin, D. Johnstone, & S. Basu (Canadian Insititute for Theoretical Astrophysics);
W. McCutcheon (University of British Columbia);
D. Routledge, & F. Vaneldik (University of Alberta);
P. Dewdney, J. Galt, A. Gray, L. Higgs, L. Knee, T. Landecker, C. Purton, R.S. Roger, K. Tapping, T. Willis, & G. Moriarty-Scheiven (Herzberg Institute of Astrophysics);
C. Beichman, & S. Terebey (California Institute of Technology);
N. Duric (University of New Mexico);
D. Green (Cambridge University);
M. Heyer (University of Massachusetts);
H. Wendker (Hamburger Sternwarte);
Z. Xi-Zhen (Beijing Astronomical Observatory)

In April 1995 the Dominion Radio Astrophysical Observatory, in collaboration with a consortium of university astronomers, began a project to image the atomic hydrogen and radio continuum emission from the interstellar medium of the Milky Way galaxy. By constructing a mosaic of 190 synthesis fields, the survey will cover the region 75 < L < 145 degrees and -3 < B < +5 degrees, with angular resolution of one arcminute. The atomic hydrogen cube will yield a 3-dimenional images with spatial resolution of order 1 pc over regions several kiloparsec in extent. In the continuum, full Stokes I, Q, U and V images are produced at 1420 MHz and a Stokes I at 408 MHz.

The CGPS survey is being carried out as part of an international collaboration to image the Milky Way, at a common resolution, in emission from all major constituents of the interstellar medium: the neutral atomic gas, the molecular gas, the ionized gas, dust and relativistic plasma. For many of these constituents the angular resolution of the images will be more than a factor of 10 better than any previous studies. We present initial images from the project as well as highlights of some early scientific results.