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Far infrared, submm and mm spectroscopy of the galactic center: Radio arc and +20/+50 km s (exp -1) cloudsThe observations of the par improved spectroscopy and the molecular clouds at the galactic center are reported. The results show: the spatial distributions of C(II) 158 microns and molecular line radiation and of the thermal radio continuum emission in the arched filaments of the radio arc are similar; about 2 x 10(exp 4) of the solar mass, or 10 percent of the total gas mass in the radio arc, are contained in C(+) regions; the H(+)/C(+) regions are probably located at the surfaces of the dense molecular clouds in the arc. Profiles, fluxes and spatial distributions of the C(II) fine structure and CO rotational lines are reported. It is demonstrated that the data does not fit models in which the neutral interstellar clouds in the arc are ionized by shocks or by magnetohydrodynamic phenomena. Moreover, that the high temperatures and densities derived previously from NH3 and CS observations may not be characteristic of the bulk of the molecular gas.
Document ID
19900003980
Acquisition Source
Legacy CDMS
Document Type
Preprint (Draft being sent to journal)
Authors
Genzel, R.
(Max-Planck Inst. Grenoble (France)., United States)
Stacey, G. J.
(California Univ. Berkeley., United States)
Harris, A. I.
(California Univ. Berkeley., United States)
Townes, C. H.
(California Univ. Berkeley., United States)
Geis, N.
(Max-Planck Inst. Grenoble (France)., United States)
Graf, U. U.
(Max-Planck Inst. Grenoble (France)., United States)
Poglitsch, A.
(Max-Planck Inst. Grenoble (France)., United States)
Stutzki, J.
(Max-Planck-Inst. fuer Physik und Astrophysik Garching, Germany)
Date Acquired
September 6, 2013
Publication Date
July 1, 1989
Subject Category
Astrophysics
Report/Patent Number
NASA-CR-185497
MPE-PREPRINT-155
NAS 1.26:185497
Accession Number
90N13296
Funding Number(s)
CONTRACT_GRANT: NAG2-208
Distribution Limits
Public
Copyright
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