| Issue |
EAS Publications Series
Volume 75-76, 2015
Conditions and Impact of Star Formation
|
|
|---|---|---|
| Page(s) | 69 - 70 | |
| Section | Extreme Star Formation: High Redshifts, Starburst, and Galactic Nuclei | |
| DOI | https://doi.org/10.1051/eas/1575012 | |
| Published online | 20 May 2016 | |
R. Simon, R. Schaaf and J. Stutzki (eds)
EAS Publications Series, 75–76 (2015) 69-70
Evolution of molecular clouds in the starburst galaxy NGC 1808 revealed with ALMA
1 Department of Physics, School of Science and Technology, Kwansei Gakuin University, Gakuen 2-1 Sanda, Hyogo 669-1337, Japan
2 Division of Physics, Faculty of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8571, Japan
3 Nobeyama Radio Observatory, National Astronomical Observatory of Japan, 462-2 Nobeyama, Minamimaki, Minamisaku, Nagano 384-1305, Japan
e-mail: d.salak@kwansei.ac.jp
e-mail: nakai@physics.px.tsukuba.ac.jp
e-mail: miyamoto.yusuke@nao.ac.jp
We present large-field CO(1–0) observations of the starburst galaxy NGC 1808 conducted with ALMA. High-resolution (∼100 pc) images reveal a high concentration of molecular gas in the nucleus, 500-pc ring, gas-rich bar, and spiral arms. We derived the bar pattern speed and found an offset between CO and Hα emission peaks in the offset ridges along the bar. The results indicate that the evolution of molecular clouds on the galactic scale is driven by bar dynamics.
© EAS, EDP Sciences, 2016