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OI and OIII in Sgr A - Neutral and ionized gas at the galactic centerMeasurements of the 63 micron O I fine structure line displayed by the galactic center were made with an LHe-cooled tandem scanned Fabry-Perot spectrometer. Data were taken from 10 positions in 40 arcsec steps along and perpendicular to the galactic plane. A peak intensity of within 0.5 of 1.5 x 10 to the -16th W/sq cm was calculated, while an 88 micron O III had an intensity of within 2 of 7 x 10 to the -18th W/sq cm on the same beam. The O I emission was spread over 4 arcmin along and 2.6 arcmin perpendicular to the galactic plane. The velocity centroids were blueshifted south of center and redshifted to the north, data indicating either large-scale excitation or kinematic inhomogeneities. A peak brightness temperature of the O I line was 130 K, i.e., a lower limit for excitation of O I. Finally, an electron density of more than 1000/cu cm was calculated.
Document ID
19830059469
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Genzel, R.
(California Univ. Berkeley, CA, United States)
Watson, D.
(California Univ. Berkeley, CA, United States)
Townes, C.
(California, University Berkeley, CA, United States)
Lester, D.
(California Univ. Berkeley, CA, United States)
Dinerstein, H.
(California Univ. Berkeley, CA, United States)
Werner, M.
(NASA Ames Research Center Moffett Field, CA, United States)
Storey, J.
(Anglo-Australian Observatory Epping, New South Wales, Australia)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Subject Category
Astrophysics
Meeting Information
Meeting: The galactic center; Proceedings of the Workshop, Pasadena
Location: Pasadena, CA
Start Date: January 7, 1982
End Date: January 8, 1982
Accession Number
83A40687
Distribution Limits
Public
Copyright
Other

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