Image Details
Caption: Fig. 7.
Molecular gas surface density as a function of Galactocentric distance ﹩R_{\mathrm{GC}\,}﹩ for three longitude ranges (top four panels) and the full range (bottom panel). The top panel shows results from our ﹩^{13}﹩CO survey for the central longitude range. The vertical ticks on top of the histograms indicate the estimated 3 σ errors.
© 2000. The American Astronomical Society. All rights reserved. Printed in U.S.A.