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Induced nuclear emission-line activity in interacting spiral galaxies

Jr. Kennicutt R. C., William C. Keel

Open publisher page 93 citations

Abstract

The authors have investigated the effect of close galaxy-galaxy interactions on the level of nuclear activity in spiral galaxies by obtaining nuclear spectrophotometry for complete samples of multiple and single systems. Galaxies with nearby companions possess significantly higher nuclear emission-line luminosities and equivalent widths, and their nuclei exhibit a significantly higher level of ionization on average. A much higher fraction of galaxies with Seyfert or Seyfert type nuclei is found in the sample of multiple systems.

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What this paper is about

The authors have investigated the effect of close galaxy-galaxy interactions on the level of nuclear activity in spiral galaxies by obtaining nuclear spectrophotometry for complete samples of multiple and single systems. Galaxies with nearby companions possess significantly higher nuclear emission-line luminosities and equivalent widths, and their nuclei exhibit a significantly higher level of ionization on average. A much higher fraction of galaxies with Seyfert or Seyfert type nuclei is found in the sample of multiple systems.

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OpenAlex reports 93 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

The authors have investigated the effect of close galaxy-galaxy interactions on the level of nuclear activity in spiral galaxies by obtaining nuclear spectrophotometry for complete samples of multiple and single systems. Galaxies with nearby companions possess significantly higher nuclear emission-line luminosities and equivalent widths, and their nuclei exhibit a significantly higher level of ionization on average. A much higher fraction of galaxies with Seyfert or Seyfert type nuclei is found in the sample of multiple systems.

Key concepts: Physics, Astrophysics, Galaxy, Spiral galaxy, Luminous infrared galaxy, Line (geometry), Emission spectrum, Astronomy

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