Protostars and Planets VI, Heidelberg, July 15-20, 2013
Large Scale CO Survey of the Northern Galaxy
JIANG, ZHIBO (PURPLE MOUNTAIN OBSERVATORY)
LI, JUNYU (PURPLE MOUNTAIN OBSERVATORY)
We present the 12CO, 13CO and C18O line survey towards a region of L=(13.2,16.3) and B=(-1.2, 0.2), as a part the ambitious project, the Milky Way Image Scroll Painting. The CO line emissions show a number of velocity components, each component shows different structure and morphology than the others. A common feature that shows up in every component is the filamentary structures. Meanwhile a number of bubbles are found in some components, which are especially clear at 40 km s-1 and 60 km s-1. The velocity gradient of the 20 km s-1 component is surprisingly large, which can be interpreted neither by simply assuming the global rotation of the spiral arms nor by assuming the local motion along the spiral arm.
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