Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasj...42..827s&link_type=abstract
Astronomical Society of Japan, Publications (ISSN 0004-6264), vol. 42, no. 6, 1990, p. 827-836.
Astronomy and Astrophysics
Astronomy
12
Galactic Bulge, H Ii Regions, Molecular Clouds, Molecular Spectra, Radio Emission, Star Formation, Carbon Monoxide, Continuous Spectra, Kinetic Energy, Stellar Winds, Thermal Emission
Scientific paper
Radio continuum maps at 10 GHz are compared with molecular line emission data in the central region of the Galaxy. The radio sources Sgr B2, Sgr B1, a continuum chain, Sgr C, and a barrel-shaped shell are examined in detail. Although thermal continuum sources (H-II regions) are traditionally associated with molecular clouds, the peak positions of the continuum and the molecular features do not correlate spatially. Intensity distributions for the line emissions are significantly asymmetric. Typical cases of the molecular-continuum avoidance are demonstrated in the molecular shell around Sgr B1 and the molecular arc surrounding G-0.27. Molecular clouds in these vicinities comprise shells or rings which envelope central continuum sources. The star-forming activity in the H-II regions near G-0.27-0.03 is theorized to have passed its peak because they are surrounded by molecular arcs.
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