1. Ammonia Cores in Massive Star Formation Steve Longmore, UNSW, ATNF Michael Burton, UNSW Peter Barnes, U. Syd Cormac Purcell, UNSW

2. ATCA Observations ● Sample – 25 sites of Massive Star Formation – Selected from previous multi-wavelength surveys – Variety of evolutionary stages ● Aim – Uncover physical and kinematic properties of dense cores. – Test the evolutionary paradigm ● Observations – Snapshot imaging inversion transitions of Ammonia ● 2003: Detection ● 2004: (1,1), (2,2) ● 2005: (4,4),(5,5)

3. Results 2. Line Profiles Large Asymmetries

4. Results 2. The Cool Cores

5. Results 3