A Velocity Structure Analysis of Giant Molecular Cloud Associated with HII Region S152

Details A Velocity Structure Analysis of Giant Molecular Cloud Associated with HII Region S152 A Velocity Structure Analysis of Giant Molecular Cloud Associated with HII Region S152

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jass...22..125c&link_type=abstract

Journal of Astronomy and Space Sciences. Vol. 22, no. 2, 125-138

Astronomy and Astrophysics

Astronomy

Molecular Cloud, Ism: 12Co Molecules, Velocity Structure, S152

Scientific paper

S152 is a small bright emission nebula located in the Perseus arm. Its optical diameter corresponds to 1.5 pc for an adopted distance 3.5 kpc. However, S152 is a part of a giant molecular cloud complex, which consists of several dense cores, containing active star-forming sites, and well aligned arm-like features. We analyzed the FCRAO 12CO (J = 1→0) Outer Galaxy Survey data in this region to study the kinematical structure of this region, which resembles a big ``scorpion". We found that there exist three different velocity components, about --54.5, --50.4, --48.8 km s-1, depending on the position of the ``scorpion". There also exist velocity gradients of 0.21 km s-1 pc-1 and 0.16 km s-1 pc-1 through the whole extent of the ``scorpion". Interestingly, these two velocity gradients show an opposite direction with each other. It is likely that the velocity structure of this region may result from the mergence of different gas clouds, and the interaction with the SNR 109.1-1.0 occurred later, mostly at the region around the ``head of the scorpion" only.

Affiliated with

Also associated with

No associations

Rating

A Velocity Structure Analysis of Giant Molecular Cloud Associated with HII Region S152 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Velocity Structure Analysis of Giant Molecular Cloud Associated with HII Region S152, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Velocity Structure Analysis of Giant Molecular Cloud Associated with HII Region S152 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1398428