NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-03-21 T09:03:43 PDT
Help | Comment | NED Home

For refcode 1989A&A...217...66A:
Retrieve 243 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
1989A&A...217...66A The preponderance of bar and ring features in starburst galaxies and active galactic nuclei R. Arsenault European Southern Observatory, Karl-Schwarzschild-Str 2, D-8046 Garching, Federal Republic of Germany Received September 14, accepted December 6, 1988 Summary. A detailed study of the spiral galaxy NGC 4321 showed that the nuclear star formation mechanism in this galaxy is very likely related to the orbits perturbation at the Inner Linblad Resonances. In order to test the hypothesis that the same physical mechanism accounts generally for such activity in spiral galaxies, a morphological analysis of a sample of starburst nuclei and active galactic nuclei (STB, AGN) as well as a control sample of normal galaxies has been carried out. It is found that the morphological type expected for starbursters like NGC 4321 (SAB(rs) or stronger), occurs at a much higher frequency in the sample of STBs and AGNs than in the control sample. The effect is stronger for STBs than for AGNs. This provides strong evidences that active formation of stars in the nuclei of spiral galaxies is linked to the perturbation of orbits at the Inner Linblad Resonances. This interpretation leads to the suggestion that an effective nuclear starburst phase is an inhibition mechanism to a more powerful type of nuclear activity like in AGNs. Key words: galaxies: barred - galaxies: active - galaxies: nuclei of - galaxies: spiral - galaxies: kinematic and dynamic of
Retrieve 243 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home