13 papers · 1 filter
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.
Central Rotation Curves of Galaxies
Yoshiaki SOFUE
We emphasize the use of high-resolution CO line observations to derive central rotation curves of galaxies. We present an example for high-resolution interferometer observations of…
ISO deep far-infrared survey in the "Lockman Hole" II. Power spectrum analysis: evidence of a strong evolution in number counts
H. Matsuhara, K. Kawara, Y. Sato +8
We investigate the characteristics of FIR brightness fluctuations at 90 micron and 170 micron in the Lockman Hole, which were surveyed with ISOPHOT aboard the Infrared Space Observ…
Distribution of Dark Matter in Bulge, Disk and Halo inferred from High-accuracy Rotation Curves
Yoshiaki Sofue
High-accuracy rotation curves of spiral galaxies show a steep rise in the central few hundred pc region, indicating high concentration of mass toward the center. Using the rotation…
Compatibility of the CO and HI Linewidths Considering the Gas Distribution and Rotation Curves
Yoshinori Tutui, Yoshiaki Sofue
We have examined the trend between CO and HI linewidths by compiling the linewidths of 219 nearby galaxies. The trend is that the CO linewidths of fast rotating galaxies tend to be…
Accurate Rotation Curves and Distribution of Dark Matter in Galaxies
Yoshiaki Sofue
We present high-accuracy rotation curves, which show a steep nuclear rise and high-velocity central rotation, followed by a broad maximum in the disk and flat part. We use the rota…