NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-03-20 T14:59:08 PDT
Help | Comment | NED Home

For refcode 2011ApJS..195...17W:
Retrieve 169 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2011ApJS..195...17W The Diagnostics and Possible Evolution in Active Galactic Nuclei Associated with Starburst Galaxies Wu, Yu-Zhong; Zhao, Yong-Heng; Meng, Xian-Min Abstract. We present a large sample which contains 45 Seyfert 1 galaxies (Sy1s), 46 hidden broad-line region (HBLR) Seyfert 2 galaxies (Sy2s), 57 non-HBLR Sy2s, and 22 starburst galaxies to distinguish their properties and to seek the possible evolution of active galactic nuclei and starburst galaxies. We show that (1) using a plot of [O III] {lambda}5007/H{alpha} versus [N II] {lambda}6584/H{alpha} of standard optical spectral diagnostic diagrams, it is found that an equation can separate non-HBLR Sy2s and HBLR Sy2s well; (2) the emission-line ratios and both the combination of the ratios and polycyclic aromatic hydrocarbon strength are utilized effectively to separate starburst galaxies and Seyfert galaxies; (3) by comparing a number of quantities from the data, we confirm well the separations with statistics; (4) on the basis of statistics, we suggest that HBLR Sy2s may be the counterparts of Sy1s at edge-on orientation. In addition, we discuss the possibility of starburst galaxies evolving to non-HBLR Sy2s and HBLR Sy2s and then evolving to Sy1s based on the statistical analysis. Key words: galaxies: abundances, galaxies: interactions, galaxies: Seyfert, galaxies: starburst
Retrieve 169 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home