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Ground-based Pa Narrow-band Imaging of Local Luminous Infrared Galaxies I: Star Formation Rates and Surface Densities
Ken Tateuchi, Masahiro Konishi, Kentaro Motohara +33
Luminous infrared galaxies (LIRGs) are enshrouded by a large amount of dust, produced by their active star formation, and it is difficult to measure their activity in the optical w…
Compact starbursts in z~3-6 submillimeter galaxies revealed by ALMA
Soh Ikarashi, R. J. Ivison, Karina I. Caputi +17
We report the source size distribution, as measured by ALMA millimetric continuum imaging, of a sample of 13 AzTEC-selected submillimeter galaxies (SMGs) at z_photo ~ 3-6. Their in…
A Multi-Transition Study of Molecules toward NGC 1068 based on High-Resolution Imaging Observations with ALMA
Taku Nakajima, Shuro Takano, Kotaro Kohno +6
We present 0.8-mm band molecular images and spectra obtained with the Atacama Large Millimeter/submillimeter Array (ALMA) toward one of the nearest galaxies with an active galactic…
Multi-molecule ALMA observations towards the Seyfert 1 galaxy NGC 1097
S. Martin, K. Kohno, T. Izumi +17
The nearby Sy 1 galaxy NGC 1097 represents an ideal laboratory to explore the molecular chemistry in the presence and surroundings of an active galactic nucleus. Exploring the dist…
Two gamma-ray bursts from dusty regions with little molecular gas
B. Hatsukade, K. Ohta, A. Endo +4
Long-duration gamma-ray bursts are associated with the explosions of massive stars and are accordingly expected to reside in star-forming regions with molecular gas (the fuel for s…
Distributions of molecules in the circumnuclear disk and surrounding starburst ring in the Seyfert galaxy NGC 1068 observed with ALMA
Shuro Takano, Taku Nakajima, Kotaro Kohno +6
Sensitive observations with ALMA allow astronomers to observe the detailed distributions of molecules with relatively weak intensity in nearby galaxies. In particular, we report di…
Enhancement of CO(3-2)/CO(1-0) Ratios and Star Formation Efficiencies in Supergiant HII Regions
Rie E. Miura, Kotaro Kohno, Tomoka Tosaki +13
We present evidence that super giant HII regions (GHRs) and other disk regions of the nearby spiral galaxy, M33, occupy distinct locations in the correlation between molecular gas,…
Evidence for a gas-rich major merger in a proto-cluster at z=2.5
Ken-ichi Tadaki, Tadayuki Kodama, Yoichi Tamura +7
Gas-rich major mergers in high-redshift proto-clusters are important events, perhaps leading to the creation of the slowly rotating remnants seen in the cores of clusters in the pr…