Ejection of Bipolar Flows from Stars Accreting Matter       through a Disk
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During the past decade it has been recognized that young stellar                objects and symbiotic stellar systems (usually binary systems)                  accrete matter from circumstellar accretion disks.  Torbett                     proposes to study this accretion and the bi-polar outflow of                    matter that is observed from these objects.  His numerical                      modelling is based on the hypothesis that matter arriving at the                star's surface from the disk creates a shock, gives up its                      rotational kinetic energy, heats the local matter, creates high                 pressures, and accelerates this matter along the two polar                      directions. (Acceleration in the radial direction is prevented by               the arrival of new material from the disk.)  This theoretical                   investigation will be accompanied by VLA radio observation of                   objects with bipolar flows.
{'FirstName': 'Michael', 'LastName': 'Torbett', 'PI_MID_INIT': 'V', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Michael V Torbett', 'EmailAddress': None, 'NSF_ID': '000173684', 'StartDate': '06/15/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
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