Mass spectrum of the Galactic center molecular clouds

Details Mass spectrum of the Galactic center molecular clouds Mass spectrum of the Galactic center molecular clouds

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001iaus..205..356m&link_type=abstract

Galaxies and their Constituents at the Highest Angular Resolutions, Proceedings of IAU Symposium #205, held 15-18 August 2000 at

Physics

1

Scientific paper

We report statistical properties of the Galactic center molecular clouds. We identified 159 molecular cloud clumps based on the Galactic center region survey in CS J=1-0 with the 45-m telescope of the Nobeyama Radio Observatory (Tsuboi et al. 1999). We determined statistical properties such as velocity width-radius relation, virial theorem mass-LTE mass relation, and mass and size spectra for the identified Galactic center molecular clumps. The mass spectral index, -1.59±0.07, of the Galactic center clumps for mass range of M>=104 Modot is approximately equal to the index values in the Galactic disk region. Moreover, we had performed observation a few clumps in the Galactic center region in CS J=2-1 with the Nobeyama Millimeter Array. We had identified cloud cores for mass range of 102-4 Modot in the clumps. It is inferred that stars are formed in these cores. We will discuss statistical properties, such as mass spectrum, of the Galactic center molecular clouds for wide mass range.

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