Extreme gas pressures in the Galactic bulge

Details Extreme gas pressures in the Galactic bulge Extreme gas pressures in the Galactic bulge

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.357..665s&link_type=abstract

Nature (ISSN 0028-0836), vol. 357, no. 6380, June 25, 1992, p. 665-667. Research supported by NSF, NASA, and Alfred P. Sloan Fou

Other

79

Galactic Bulge, Galactic Structure, Gas Pressure, Interstellar Gas, Molecular Gases, Carbon Monoxide, Molecular Clouds, Solar Neighborhood, Thermodynamic Equilibrium

Scientific paper

It is proposed that the characteristics of molecular gas in the innermost region of the Galactic Center reflect the existence of high gas pressure - about 5 x 10 exp 6 k/cu cm, or two and half order of magnitude higher than that in the solar neighorhood - in the inner 500 pc of the Galaxy. This high pressure can be inferred from the presence of hot X-ray-emitting gas, which is also known to be present in the bulges of many other galaxies. The molecular gas in these bulges should thus resemble that in the center of the Galaxy.

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