The Dominion Radio Astrophysical Observatory, in collaboration with a consortium of university astronomers, has begun a survey of the atomic hydrogen and radio continuum emission from our Milky Way galaxy. By constructing a mosaic of 186 synthesis fields, the survey will cover the region 75(deg) < l < 145(deg) and -3(deg) < b < +5(deg) , with angular resolution of ~ 1'. Within this region the observations will yield an atomic hydrogen cube with 256 channels with velocity resolution of 1.2 km s(-1) , Stokes I, Q, U and V continuum images at 1420 MHz and a Stokes I continuum image at 408 MHz. The DRAO survey is 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. The aim is to produce a database of high resolution, high-dynamic range images of the Galaxy for multi-phase studies of the physical states and processes in the interstellar medium. We present some preliminary images from the survey project as well as highlights of some initial scientific results.
American Astronomical Society Meeting Abstracts
- Pub Date:
- December 1996