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arXiv 0809.1680astro-ph
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星系对中引力相互作用引起的活动

Activity induced by Gravitational Interaction in Galaxy Pairs

D. Dultzin, J. J. Gonzalez, Y. Krongold, H. Hernandez-Toledo, E. M. Huerta, I. Cruz-Gonzalez, L. Olguin, P. Marziani, F. Hernandez-Ibarra

摘要:

对97个具有混合形态(E+S)的孤立星系对中的旋涡星系样本的核发射进行了系统的研究,结果表明:(1)在这些旋涡星系对中,有40%的旋涡星系有活动星系核活动;(2)在所发现的39个活动星系核中,只有一个具有1型(宽线分量)活动;(3)活动星系核往往有比恒星形成星系更近的伴星系。这些结果与一个简单的塞弗茨统一模型不一致,其中只有遮蔽/取向效应是相关的,并巧妙地支持一个进化的情况下,相互作用触发核活动,和遮蔽/取向效应可能是互补的,在一定的进化阶段。

英文摘要:

A systematic study of the nuclear emission of a sample of 97 spirals in isolated galaxy pairs with mixed morphology (E+S) shows that: 1) AGN activity is found in 40% of the spiral galaxies in these pairs, 2) Only one out of the 39 AGN found has type 1 (Broad line Component) activity, and 3) AGN tend to have closer companions than star forming galaxies. These results are at odds with a simple Unified Model for Seyferts, where only obscuration/orientation effects are of relevance, and neatly support an evolutionary scenario where interactions trigger nuclear activity, and obscuration/orientation effects may be complementary in a certain evolutionary phase.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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