Mass distribution in the galactic centre

Details Mass distribution in the galactic centre Mass distribution in the galactic centre

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.315..467c&link_type=abstract

Nature (ISSN 0028-0836), vol. 315, June 6, 1985, p. 467-470. Research supported by the Research Corp.

Astronomy and Astrophysics

Astronomy

38

Black Holes (Astronomy), Galactic Nuclei, Gas Dynamics, Infrared Astronomy, Mass Distribution, Submillimeter Waves, Doppler Effect, Giant Stars, Star Clusters

Scientific paper

New infrared and submillimetre spectroscopic measurements of the gas dynamics in the central 10 pc of the Galaxy make a convincing case that the mass distribution at the centre of the Galaxy is more concentrated than a spherical isothermal stellar cluster. The measurements fit a point mass of ≡4×106M_sun; but are also consistent with a cluster where stellar density decreases with radius (R) at least as fast as R-2.7, or a combination of a point mass and a stellar cluster. The dynamical information combined with previous 2-μm observations favour a large point mass, which is presumably a massive black hole.

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