THE DIAGNOSTICS AND POSSIBLE EVOLUTION IN ACTIVE GALACTIC NUCLEI ASSOCIATED WITH STARBURST GALAXIES

Journal Article · Mon Aug 01 04:00:00 EDT 2011 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.1088/0067-0049/195/2/17· OSTI ID:21560346

Yuzhong, Wu; Yongheng, Zhao

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.

• OSTI ID: 21560346
• Journal Information: Astrophysical Journal, Supplement Series, Journal Name: Astrophysical Journal, Supplement Series Journal Issue: 2 Vol. 195; ISSN 0067-0049; ISSN APJSA2
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ABUNDANCE
EMISSION
EVOLUTION
GALAXIES
GALAXY NUCLEI
SEYFERT GALAXIES