Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988s%26t....76...22d&link_type=abstract
Sky and Telescope (ISSN 0037-6604), vol. 76, July 1988, p. 22-27.
Astronomy and Astrophysics
Astronomy
Carbon Monoxide, Emission Spectra, Milky Way Galaxy, Molecular Clouds, Radio Astronomy, Astronomical Maps, Radial Velocity, Radio Telescopes, Southern Hemisphere
Scientific paper
The study of the location and composition of molecular clouds is discussed. The use of carbon monoxide as a tracer as star formation and interstellar gas and the instruments used to find and map CO emission are examined. At 2.6 mm, the wavelength at which CO is most easily observed, radio telescopes have a beam size of about 1 arc minute, making it difficult to map large areas. The mini telescope which has a beam size of about 8 arc minutes at 2.6 mm is being used to measure the average emission from a one-half degree patch of sky through a 4-by-4 grid to map larger areas of the Galaxy. One-fifth of the sky has been mapped with 31,000 individual observations covering more than 7,700 square degrees. In addition, the way in which maps of latitude, intensity, and velocity are converted into meaningful maps is examined.
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