We conducted an analysis of a selected region from the FCRAO 12CO Outer Galaxy Survey. The selected region is located between galactic longitude 117° and 124° with the velocity of -23 km s-1 < VLSR <-10 km s-1. Molecular clouds in this region show a peculiar velocity field, protruding from the Local Arm population. The selected region is divided into 7 clouds by spatial location. Though we were not able to identify the direct driving source for peculiar velocity of our target region, we find that there are several internal YSOs or star forming activities; there are many associated sources like an outflows, a high-mass protostellar candidate and H2O maser sources. We attribute the driving energy source to older generation of episodic star formation. Masses of main clouds(cloud 1-4) estimated using a conversion factor from 12CO luminosity are larger than 104M⊙. Other components have a small mass as about 103M⊙. Among main clouds, cloud 2 and 4 seem to be marginally gravitational bound systems as their ratio of MCO to MVIR is about 2~3, and the internal velocity dispersion is larger than the centroid velocity dispersion. Total mass estimated using a conversion factor from 12CO luminosity is 7.9 × 104M⊙.

• Young-Ung Lee(Korea Astronomy and Space Science Institute, International Center for Astrophysics)
• Mi-Ju Kang(Department of Astronomy & Space Science, Chungnam National University/Korea Astronomy and Space Science Institute, International Center for Astrophysics)