5 papers
The Nature of the faint far-infrared extragalactic source population: Optical/NIR and radio follow-up observations of ISOPHOT deep-field sources using Keck, Subaru, and VLA telescopes
Yuko Kakazu, D. B. Sanders, R. D. Joseph +11
We report on optical and near-infrared (NIR) follow-up spectroscopy of faint far-infrared (FIR) sources found in our deep FIR survey by Kawara et al.
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…
Dusty Tori of Seyfert Nuclei
Yoshiaki Taniguchi, Takashi Murayama, Hideaki Mouri
Dusty tori around active galactic nuclei (AGNs) play an important role in the classification of Seyfert galaxies. Therefore, physical properties of dusty tori are of great interest…
What Are Narrow-Line Seyfert 1 Galaxies ?: Toward A Viewing-Angle-Dependent Unified Model for Seyfert Galaxies
Yoshiaki Taniguchi, Takashi Murayama, Tohru Nagao
Recently growing evidence has been accumulated that the NLS1s are viewed from nearly pole-on viewing angles. However, there has been no theoretical model which explains the followi…
The Epoch of Major Star Formation in High-z Quasar Hosts
Yoshiaki Taniguchi, Nobuo Arimoto, Takashi Murayama +3
We present the results of our observing program on near infrared spectroscopy of high-redshift quasars which have been undertaken both at Kitt Peak National Observatory and at Maun…