Korean VLBI Network (KVN)

2015 Seminar List:

01/23/2015   01/30/2015   02/13/2015   02/27/2015   03/20/2015   04/10/2015   05/08/2015   05/15/2015   05/22/2015   05/29/2015   06/05/2015   06/12/2015   07/03/2015   07/24/2015   07/31/2015   08/07/2015   08/28/2015   09/04/2015   09/18/2015   09/25/2015   10/02/2015   10/30/2015   11/06/2015   11/27/2015  

Dr. Sung-ju Kang (TRAO)
An Improved Model of Spectral-Line Profile from Collapsing Core IRAS 01202+6133

An analysis of HCO+(3-2) and H13CO(3-2) observations of the massive (M~ 20Msun) submillimeter/IR source IRAS 01202+6133 located on the periphery of the H II region KR 120 (Sh 2-187).

The HCO+ line profile has a classical blue-asymmetric shape with optically thin H13CO+ line peaking at the position expected if the HCO+ line arises from a combination of self-absorption and infall motion.

We have modified existing analytic radiative transfer models to allow for the fitting of submillimeter/millimeter line profiles that have both self-absorption features and optically thin wings and applied these models to our HCO+ spectrum of IRAS 01202+6133.

We conclude that it is a young Class I YSO with a substantial envelope undergoing slow infall and having some outflow motions.

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Korean VLBI Network (KVN)