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Paper: Giant Clumps in the Inner Galaxy
Volume: 267, Hot Star Workshop III: the Earliest Stages of Massive Star Birth
Page: 379
Authors: Lee, Y.; Ryu, O.-K.; Kim, H.-R.; Kim, M.-Y.
Abstract: We present the first observational results toward two giant clumps centered on (l, b) = (34.25, 0.51) and (12.8, -0.2). These two clumps were identified in the inner Galaxy using Bell Laboratories 13CO(1-0) Galactic Plane Survey. We mapped 12'x 12' area of the regions in CS(2-1), CS(3-2), C18O(1-0), C17O(1-0), HCO+(1-0), and C34 S(2-1) with 14m telescopes at Taeduk Radio Astronomy Observatory (TRAO) and Five College Radio Astronomy Observatory (FCRAO). Distances of the clumps are determined to be 3.5 kpc and 3.8 kpc, respectively, using a Galactic rotation curve. Sizes and the linewidths in CS of two giants clumps are estimated to be about 8 pc and 4-5 km/s and their masses are in order of 104 Msun which are among the largest ones ever known in the inner Galaxy except the Galactic Center Region.
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