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Where is the [O III]4363 emitting region in active galactic nuclei?
Tohru Nagao, Takashi Murayama, Yoshiaki Taniguchi
The emission-line flux ratio of [O III]4363/[O III]5007 (R_OIII)is a useful diagnostic for the ionization mechanism and physical properties of emission-line regions in active galac…
ISO continuum observations of quasars at z=1-4 I.Spectral energy distributions of quasars from the UV to far-infrared
S. Oyabu, K. Kawara, Y. Tsuzuki +8
Eight luminous quasars with at z = 1.4 - 3.7 have been observed in the mid- and far-infrared using ISO. All the quasars have been detected in the mid-infrared ba…
SiO Emission in the Multi-Lobe Outflow associated with IRAS 16293-2422
Naomi Hirano, Hitomi Mikami, Tomofumi Umemoto +2
We have mapped the thermal emission line of SiO (v = 0; J = 2-1) associated with the quadrupolar molecular outflow driven by the very cold far-infrared source IRAS 16293-2422. The…
Numerous Old Starburst Galaxies in the Local Universe
H. Mouri, Y. Taniguchi
Old starburst galaxies are deficient in O stars, and hence do not exhibit strong line emission in the optical regime. However, there remain many B stars, which are expected to heat…
A New interpretation of chain galaxies at high redshift
Yoshiaki Taniguchi, Yasuhiro Shioya
We propose a possible new model for the formation of chain galaxies at high redshift. Our model is summarized as follows. Step I: Successive merging of subgalactic gas clumps resul…
Photometric Properties of the Arp 220 Super Star Clusters
Yasuhiro Shioya, Yoshiaki Taniguchi, Neil Trentham
We investigate the photometric properties of six super stellar clusters (SSCs) seen in both the optical and near-infrared Hubble Space Telescope images of the local ultraluminous s…