Influences of galaxy interactions on AGN activity
Xin-Fa Deng, Guisheng Yu, Peng Jiang
TL;DR
This study investigates how galaxy interactions influence active galactic nucleus (AGN) activity, finding weak or no significant correlation in different galaxy samples from SDSS DR7.
Contribution
It provides a comparative analysis of AGN activity in paired versus isolated galaxies across different luminosity samples using SDSS data.
Findings
Paired faint galaxies show slightly higher AGN fractions.
Luminous galaxy pairs tend to have lower AGN fractions.
No strong evidence links galaxy interactions to AGN activation.
Abstract
Using two volume-limited Main galaxy samples of the Sloan Digital Sky Survey Data Release 7 (SDSS DR7), we explore influences of galaxy interactions on AGN activity. It is found that in the faint volume-limited sample, paired galaxies have a slightly higher AGN fraction than isolated galaxies, whereas in the luminous volume-limited sample, an opposite trend can be observed. The significance is <1 sigma. Thus, we do not observe strong evidence that interactions or mergers likely trigger the AGN activity.
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