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Discovery of Active Galactic Nuclei in Mid- and Far-Infrared Deep Surveys with ISO
Yoshiaki Taniguchi
We present a summary on the discovery of active galactic nuclei in mid- and far-infrared deep surveys with use of the Infrared Space Observatory.
On the Origin of Lyman Blobs at High Redshift: Submillimetric Evidence for a Hyperwind Galaxy at z=3.1
Yoshiaki Taniguchi, Yasuhiro Shioya, Yuko Kakazu
The most remarkable class of high-redshift objects observed so far is extended Ly emission-line blobs found in an over-density region at redshift 3.1. They may be either a dust-…
A Shock-Induced Pair of Superbubbles in the High-Redshift Powerful Radio Galaxy MRC 0406-244
Yoshiaki Taniguchi, Youichi Ohyama, Takashi Murayama +26
We present new optical spectroscopy of the high-redshift powerful radio galaxy MRC 0406244 at redshift of 2.429. We find that the two extensions toward NW and SE probed in the r…
Seyfert-Type Dependences of Narrow Emission-Line Ratios and Physical Properties of High-Ionization Nuclear Emission-Line Regions in Seyfert Galaxies
Tohru Nagao, Takashi Murayama, Yoshiaki Taniguchi
In order to examine how narrow emission-line flux ratios depend on the Seyfert type, we compiled various narrow emission-line flux ratios of 355 Seyfert galaxies from the literatur…
The [O III]4363 Emitting Region Obscured by Dusty Tori
Tohru Nagao, Takashi Murayama, Yoshiaki Taniguchi
The emission-line flux ratio of [O III]4363/[O III]5007 is a useful diagnostic for the ionization mechanism and physical properties of narrow-line regions in active galactic nuclei…
Far-Infrared Census of Starburst-Seyfert Connection
H. Mouri, Y. Taniguchi
Far-infrared flux densities are newly extracted from the IRAS database for the RSA and CfA complete samples of Seyfert galaxies. These data are used to classify the Seyfert galaxie…