Previous abstract Next abstract
Session 45 - Radio Astronomy, Yesterday, Today and Tomorrow.
Display session, Tuesday, June 11
Using the James Clerk Maxwell Telescope, we observed two rotational transitions of CO (J=2\to1 and J=3\to2) toward NGC 5461---the brightest giant HII region in the M101 galaxy. With even higher resolution (a few arcseconds), we observed CO J=1\to0 in NGC 5461 using the Owens Valley Millimeter Array. The higher resolution observations resolve the peak seen in the J=2\to1 map to several smaller peaks. These giant molecular clouds have diameters up to 200 pc. Also, we have calculated the line ratio of ^12CO/^13CO to be between 6.7 and 8.1, which agrees well with the ratios found in M33. Finally, we obtained a marginal detection of ^13CO J=2\to1.
Program listing for Tuesday