Infrared Band Emission from Interstellar Space:             Laboratory and Theoretical Studies
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{'SignBlockName': 'Vernon Pankonin', 'PO_EMAI': None, 'PO_PHON': None}
Dr. Barker at the University of Michigan will conduct a                         laboratory research program to investigate the properties of                    polycyclic aromatic hydrocarbons (PAH).  In particular, the                     experiments will be designed to investigate the production of                   infrared emission from PAH molecules which are excited by the                   absorption of visible and ultraviolet light.                                                                                                                    In the last few years, infrared astronomical observations have                  shown that many celestial objects exhibit a distinctive set of                  emission features which have become known as the unidentified                   infrared emission bands.  It has been suggested that these                      emission bands are due to polycyclic aromatic hydrocarbon-like                  species in interstellar space.  If this is true, then PAH's could               be an abundant and very important constituent of the interstellar               medium.  Much laboratory work remains to be done to understand                  the properties of PAH's before they can be confirmed to be the                  sources of the observed infrared emission bands.  Dr. Barker's                  research is an important component of the Earth-based laboratory                effort.
{'FirstName': 'John', 'LastName': 'Barker', 'PI_MID_INIT': 'R', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'John R Barker', 'EmailAddress': 'jrbarker@umich.edu', 'NSF_ID': '000263030', 'StartDate': '11/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
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{'Code': '1216', 'Text': 'GALACTIC ASTRONOMY PROGRAM'}
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