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The Structure of Galactic Nuclei: Recent Observations

Published online by Cambridge University Press:  30 March 2016

S. M. Faber
S. M. Faber*
Affiliation:
Lick Observatory and Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz

Extract

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Nuclei are often envisioned as sites for energetic and explosive phenomena in galaxies and may even be the birthplaces of quasars. Regardless of what models are chosen to represent such sources, a knowledge of the surrounding mass density and gravitational potential field is bound to be important for the creation and maintenance of the central engine. Moreover, galactic nuclei are worthy of close scrutiny even for their own sake. They constitute the brightest, most easily observed portions of galaxies and, in ellipticals, yield the central mass-to-light ratio, a quantity which cannot be determined for ellipticals using the ordinary rotation-curve method.

Type
Joint Discussion
Information
Highlights of Astronomy , Volume 5: Highlights of Astronomy. As presented at the XVIIth General Assembly of the IAU, 1979 , 1980 , pp. 135 - 142
Copyright
Copyright © Cambridge University Press 1980

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