Journal or Book Title
Astronomical Society of the Pacific Conference Series
In order to search for obscured objects at high redshifts, we have made deep far-infrared (FIR) deep survey in the Lockman Hole using ISOPHOT onboard ISO (Kawara et al. 1998, A&A, 336, L9). In this survey several tens of FIR sources have been found at 95micron and 175micron. Here we present results of optical and NIR spectroscopic followup observations performed at the W. M.Keck Observatory.
AGN Surveys, IAU Colloquium 184
Kakazu, Y; Sanders, DB; Joseph, RD; Cowie, LL; Murayama, T; Taniguchi, Y; Veilleux, S; Yun, Min; Kawara, K; Sofue, Y; Sato, Y; Okuda, H; Wakamatsu, K; Matsumoto, T; and Matsuhara, H, "The NAture of the Faint Far-Infrared Extragalactic Source Population: Optical/NIR and Radio Follow-Up Observationts of ISOPHOT Deep-Field Sources using the Keck, Subaru, and VLA Telescopes." (2002). Astronomical Society of the Pacific Conference Series. 1116.