Induced starburst and nuclear activity: Faith, facts, and theory

Details Induced starburst and nuclear activity: Faith, facts, and theory Induced starburst and nuclear activity: Faith, facts, and theory

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3098..689s&link_type=abstract

In NASA, Marshall Space Flight Center, Paired and Interacting Galaxies: International Astronomical Union Colloquium No. 124 p 68

Astronomy and Astrophysics

Astronomy

14

Active Galactic Nuclei, Galaxies, Gas Dynamics, Nuclear Reactions, Stars, Angular Momentum, Fuels, Perturbation, Stability, Stellar Evolution, Tides

Scientific paper

The problem of the origin of starburst and nuclear (nonstellar) activity in galaxies is reviewed. A physical understanding of the mechanism(s) that induce both types of activity requires one to address the following issues: (1) what is the source of fuel that powers starbursts and active galactic nuclei; and (2) how is it channeled towards the central regions of host galaxies? As a possible clue, the author examines the role of non-axisymmetric perturbations of galactic disks and analyzes their potential triggers. Global gravitational instabilities in the gas on scales approx. 100 pc appear to be crucial for fueling the active galactic nuclei.

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