Extended emission associated with young HII regions

Details Extended emission associated with young HII regions Extended emission associated with young HII regions

2004-12-06

arxiv.org/abs/astro-ph/0412146v1

Mon.Not.Roy.Astron.Soc. 357 (2005) 1003-1012

Astronomy and Astrophysics

Astrophysics

11 pages, 9 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2005.08716.x

We have used the Australia Telescope Compact Array (ATCA) to make observations of a sample of eight young ultra-compact HII regions, selected on the basis that they have associated class II methanol maser emission. We have made observations sensitive to both compact and extended structures and find both to be present in most sources. The scale of the extended emission in our sample is in general less than that observed towards samples based on IRAS properties, or large single-dish flux densities. Our observations are consistent with a scenario where extended and compact radio continuum emission coexists within HII regions for a significant period of time. We suggest that these observations are consistent with a model where HII evolution takes place within hierarchically structured molecular clouds. This model is the subject of a companion paper (Shabala et al. 2005) and addresses both the association between compact and extended emission and UCHII region lifetime problem.

Affiliated with

Also associated with

No associations

Rating

Extended emission associated with young HII regions 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 Extended emission associated with young HII regions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extended emission associated with young HII regions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-76312