Distribution of stars and dust near the galactic centre - A reappraisal

Details Distribution of stars and dust near the galactic centre - A reappraisal Distribution of stars and dust near the galactic centre - A reappraisal

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....68..123a&link_type=abstract

Astronomy and Astrophysics, vol. 68, no. 1-2, Aug. 1978, p. 123-130.

Astronomy and Astrophysics

Astronomy

2

Astronomical Models, Cosmic Dust, Galactic Nuclei, Interstellar Matter, Star Distribution, Absorptivity, Black Holes (Astronomy), Diffuse Radiation, Far Infrared Radiation, Infrared Astronomy, Optical Thickness, Spatial Distribution, Star Clusters

Scientific paper

This paper analyzes new data on the far-infrared emission from dust in the galactic center. Its conclusions are: (1) the central dust cloud has a radius of 14 pc and a fairly constant density of about 10 to the -19th power kg/cu m; (2) the dust temperature is proportional to the 1/6 power of the star distribution, reaching 40 K at a distance r = 20 pc; and (3) the star distribution is proportional to the -9/4 power of r for r = 0.12-18 pc. The last conclusion is consistent with a model of the central star cluster that is perturbed by a black hole with stars diffusing outward.

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