Cool Atomic Clouds in Spiral Galaxies
{'Code': '03020400', 'Directorate': {'Abbreviation': 'MPS', 'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'Abbreviation': 'AST', 'LongName': 'Division Of Astronomical Sciences'}}
{'SignBlockName': 'Millissa J. Evans', 'PO_EMAI': None, 'PO_PHON': None}
The research will involve a study of the cool atomic phase of the               interstellar medium in the disks of nearby spiral galaxies.  The                purpose of the research is to measure the relative fractions of                 warm and cool interstellar atomic hydrogen (HI).  This fraction                 is a sensitive function of the heating process and the                          interstellar pressure.  The second objective is to measure the                  cloud size spectrum in the mass range one hundred to several                    thousand solar masses.  The observations will show whether the                  abundance of these of these atomic clouds increases with                        decreasing galactic radius, as do the molecular clouds in most                  spirals, or whether the atomic clouds are depopulated where the                 molecular clouds are most abundant.  The third objective is to                  measure the cross-sections of spiral galaxies for 21 cm                         wavelength absorption.  This will provide a better understanding                of the origin of HI absorption lines at high redshifts.  The                    observing technique will be to measure 21 cm absorption spectra                 through the disks of 50 nearby spiral galaxies.  All Shapley-                   Ames catalog of galaxies (blue magnitude less than 12) with                     suitable background sources will be observed, and very nearby                   galaxies (designated M31, M33, and M81) will be studied along                   several lines of sight.  The recent expansion of the Very large                 Array (VLA) on-line data reduction system makes this feasible for               the first time.  The basic purpose of this research will be                     to understand the abundance and distribution of cool interstellar               clouds in spiral galaxies and to determine whether molecular and                atomic clouds are a single population or two distinct species.
{'FirstName': 'John', 'LastName': 'Dickey', 'PI_MID_INIT': 'M', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'John M Dickey', 'EmailAddress': 'John.Dickey@utas.edu.au', 'NSF_ID': '000209646', 'StartDate': '08/15/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Minnesota-Twin Cities', 'CityName': 'MINNEAPOLIS', 'ZipCode': '554552009', 'PhoneNumber': '6126245599', 'StreetAddress': '200 OAK ST SE', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Minnesota', 'StateCode': 'MN', 'CONGRESSDISTRICT': '05', 'CONGRESS_DISTRICT_ORG': 'MN05', 'ORG_UEI_NUM': 'KABJZBBJ4B54', 'ORG_LGL_BUS_NAME': 'REGENTS OF THE UNIVERSITY OF MINNESOTA', 'ORG_PRNT_UEI_NUM': None}
{'Name': None, 'CityName': None, 'StateCode': None, 'ZipCode': None, 'StreetAddress': None, 'CountryCode': None, 'CountryName': None, 'StateName': None, 'CountryFlag': None, 'CONGRESSDISTRICT': None, 'CONGRESS_DISTRICT_PERF': '""'}
{'Code': '1217', 'Text': 'EXTRAGALACTIC ASTRON & COSMOLO'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8722990.xml'}