Two High-Mass Cores at Different Evolutionary Stages
Abstract
We recently observed a high-mass star-forming clump with 3 mm ATCA observations in August 2013 (C2635). In this source we found two very high-mass cores (>50 solar masses) that appear to be at different evolutionary states. Of the two cores, the seemingly lower mass core appears to be at a later evolutionary stage based on its strong outflow, Spitzer IRAC emission, and OH/H2O masers. No high-mass star formation model can explain two high-mass cores forming next to each other with the youngest core having the most mass. In order to determine the mass and evolutionary stage of these two cores, we request 15 mm observations at 2'' resolution. NH3 and CH3OH lines will provide rotation temperatures for mass calculations and, along with observations of CH3OH and H2O masers and the free-free continuum, will determine the evolutionary stage.
- Publication:
-
ATNF Proposal
- Pub Date:
- April 2014
- Bibcode:
- 2014atnf.prop.6132S
- Keywords:
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- masers (Galactic and extragalactic);
- star formation (Galactic);
- ATCA