Abstract
Much of what is known about molecular clouds and their relation to star formation and galactic structure has been obtained from the large scale CO surveys. For several reasons, however, these have been done less systematically and less completely than the early 21 cm surveys; a great deal remains to be done. After a very brief general summary of what has been learned, I will emphasize the work now underway on the outer Galaxy and at high and intermediate latitudes. I will also briefly describe work in progress on M31. It will be argued in conclusion that a complete Galactic CO survey at an angular resolution of 1′ is quite feasible with a dedicated multiple-feed telescope.
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Thaddeus, P. (1997). Present and Future CO Surveys. In: Latter, W.B., Radford, S.J.E., Jewell, P.R., Mangum, J.G., Bally, J. (eds) CO: Twenty-Five Years of Millimeter-Wave Spectroscopy. International Astronomical Union / Union Astronomique Internationale, vol 170. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5414-7_1
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