Far-infrared, submillimeter, and millimeter spectroscopy of the Galactic center - Radio ARC and +20/+50 kilometer per second clouds

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168827· OSTI ID:6690632

Genzel, R; Harris, A I; Geis, N; Stacey, G J; Townes, C H ^[1]

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1. Max-Planck-Institut fuer extraterrestrische Physik, Garching (Germany, F.R.) California Univ., Berkeley (USA)

Results are presented from FIR, sub-mm, and mm spectroscopic observations of the radio arc and the +20/+50 km/s molecular clouds in the Galactic center. The results for the radio arc are analyzed, including the spatial distribution of C II forbidden line emission, the spatial distribution of CO emission, the luminosity and mass of C(+) regions, and the CO 7 - 6 emission and line profiles. Model calculations are used to study molecular gas in the radio arc. In addition, forbidden C II, CO 7 - 6, and C(O-18) mapping is presented for the +20/+50 km/x clouds. Consideration is given to the impact of the results on the interpretation of the physical conditions, excitation, and heating of the gas clouds in the arc and near the center. 65 refs.

• OSTI ID: 6690632
• Journal Information: Astrophysical Journal; (USA), Vol. 356; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GALAXY NUCLEI
EMISSION SPECTRA
MILKY WAY
COSMIC GASES
COSMIC RADIO SOURCES
FAR INFRARED RADIATION
INFRARED SPECTRA
INTERSTELLAR SPACE
MICROWAVE SPECTRA
MORPHOLOGY
PHOTOIONIZATION
SPATIAL DISTRIBUTION
SPECTROSCOPY
DISTRIBUTION
ELECTROMAGNETIC RADIATION
FLUIDS
GALAXIES
GASES
INFRARED RADIATION
IONIZATION
RADIATIONS
SPACE
SPECTRA
640105* - Astrophysics & Cosmology- Galaxies