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Star Formation On Sub-kpc Scale Triggered By Non-linear Processes In Nearby Spiral Galaxies
Rieko Momose, Jin Koda, Robert C. Kennicutt +8
We report a super-linear correlation for the star formation law based on new CO(=1-0) data from the CARMA and NOBEYAMA Nearby-galaxies (CANON) CO survey. The sample includes 10…
Giant Molecular Clouds and Star Formation in the Tidal Molecular Arm of NGC 4039
D. Espada, S. Komugi, E. Muller +23
The properties of tidally induced arms provide a means to study molecular cloud formation and the subsequent star formation under environmental conditions which in principle are di…
Physical Conditions in Molecular Clouds in the Arm and Interarm Regions of M51
J. Koda, N. Scoville, T. Hasegawa +10
We report systematic variations in the CO(2-1)/CO(1-0) line ratio (R) in M51. The ratio shows clear evidence for the evolution of molecular gas from the upstream interarm regions,…
GMC Evolutions in the Nearby Spiral Galaxy M33
Rie E. Miura, Kotaro Kohno, Tomoka Tosaki +13
We present a Giant Molecular Cloud (GMC) catalog toward M33, containing 71 GMCs in total, based on wide field and high sensitivity CO(J=3-2) observations with a spatial resolution…
Resolved Measurements of Xco in NGC 6946
Jennifer Donovan Meyer, Jin Koda, Rieko Momose +9
We present the largest sample to date of giant molecular clouds (GMCs) in a substantial spiral galaxy other than the Milky Way. We map the distribution of molecular gas with high r…
Star-forming Cloud Complexes in the Central Molecular Zone of NGC 253
Kazushi Sakamoto, Rui-Qing Mao, Satoki Matsushita +3
We report 350 and 230 GHz observations of molecular gas and dust in the starburst nucleus of NGC 253 at 20-40 pc (1"-2") resolution. The data contain CO(3-2), HCN(4-3), CO(2-1), 13…
Star formation efficiency in the Barred Spiral Galaxy NGC 4303
Rieko Momose, Sachiko K. Okumura, Jin Koda +1
We present new CO(J=1-0) observations of the barred galaxy NGC 4303 using the Nobeyama 45m telescope (NRO45) and the Combined Array for Research in Millimeter-wave Astronomy…
ASTE CO(3-2) Mapping toward the Whole Optical Disk of M 83: Properties of Inter-arm GMAs
Kazuyuki Muraoka, Kotaro Kohno, Tomoka Tosaki +9
We present a new on-the-fly (OTF) mapping of CO(J=3-2) line emission with the Atacama Submillimeter Telescope Experiment (ASTE) toward the 8' x 8' (or 10.5 x 10.5 kpc at the distan…
Dynamically Driven Evolution of the Interstellar Medium in M51
J. Koda, N. Scoville, T. Sawada +20
We report the highest-fidelity observations of the spiral galaxy M51 in CO emission, revealing the evolution of giant molecular clouds (GMCs) vis-a-vis the large-scale galactic str…