NDLI: Galaxy interactions and strength of nuclear activity

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Galaxy interactions and strength of nuclear activity

Content Provider	NASA Technical Reports Server (NTRS)
Author	Simkin, S. M.
Copyright Year	1990
Description	Analysis of data in the literature for differential velocities and projected separations of nearby Seyfert galaxies with possible companions shows a clear difference in projected separations between type 1's and type 2's. This kinematic difference between the two activity classes reinforces other independent evidence that their different nuclear characteristics are related to a non-nuclear physical distinction between the two classes. The differential velocities and projected separations of the galaxy pairs in this sample yield mean galaxy masses, sizes, and mass to light ratios which are consistent with those found by the statistical methods of Karachentsev. Although the galaxy sample discussed here is too small and too poorly defined to provide robust support for these conclusions, the results strongly suggest that nuclear activity in Seyfert galaxies is associated with gravitational perturbations from companion galaxies, and that there are physical distinctions between the host companions of Seyfert 1 and Seyfert 2 nuclei which may depend both on the environment and the structure of the host galaxy itself.
File Size	299696
Page Count	4
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19910007601
Archival Resource Key	ark:/13960/t4cp21373
Language	English
Publisher Date	1990-11-01
Access Restriction	Open
Subject Keyword	Astrophysics Interacting Galaxies Seyfert Galaxies Gravitation Statistical Analysis Kinematics Perturbation Velocity Nuclear Reactions Galactic Nuclei Mass To Light Ratios Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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