Radiative and Collisional Atomic Data for Singly Ionized    Iron (FEII)
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The investigators will carry out theoretical calculations of                    radiative transition probabilities and collisional scattering                   cross sections for the ion Fe+.  The lines from this ion dominate               and complicate many astrophysical spectra.  Use of a Cray 2                     computer allows vastly greater accuracy than any previous                       projects.                                                                                                                                                       Most information about stars is derived from an analysis of their               spectra.  But many stellar spectra are complicated by hundreds of               spectrum lines due to the iron ion Fe+.  Correction of these lines              requires a detailed calculation of the atomic levels of Fe+ and                 various transitions between them.  A calculation of the required                accuracy is now possible by use of a Cray 2 supercomputer.                      Pradhan has the computer codes and helpful national and                         international collaborations needed to accomplish this calculation              under the present grant.
[{'FirstName': 'Richard', 'LastName': 'McCray', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Richard McCray', 'EmailAddress': 'dick@jila.colorado.edu', 'NSF_ID': '000443990', 'StartDate': '02/15/1988', 'EndDate': None, 'RoleCode': 'Co-Principal Investigator'}, {'FirstName': 'Anil', 'LastName': 'Pradhan', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Anil Pradhan', 'EmailAddress': 'pradhan@astronomy.ohio-state.edu', 'NSF_ID': '000416304', 'StartDate': '02/15/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}]
{'Name': 'University of Colorado at Boulder', 'CityName': 'Boulder', 'ZipCode': '803090001', 'PhoneNumber': '3034926221', 'StreetAddress': '3100 MARINE ST', 'StreetAddress2': 'STE 481 572 UCB', 'CountryName': 'United States', 'StateName': 'Colorado', 'StateCode': 'CO', 'CONGRESSDISTRICT': '02', 'CONGRESS_DISTRICT_ORG': 'CO02', 'ORG_UEI_NUM': 'SPVKK1RC2MZ3', 'ORG_LGL_BUS_NAME': 'THE REGENTS OF THE UNIVERSITY OF COLORADO', 'ORG_PRNT_UEI_NUM': None}
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