Research Project
Grant-in-Aid for Young Scientists (B)
The standard galaxy formation model predicts that galaxy collisions and mergers play an important role in the formation and evolution of disk galaxies. However, this process has not been proved observationally. Here we use the ALMA telescope to investigate whether galaxy collisions can lead to the formation of large disk galaxies.We detected molecular gas emission from 30 galaxies out of the 37 galaxies that we have observed. Out of the 30 galaxies, 24 of them were found to posses rotating molecular gas disks. The size of the disks in a few of the galaxies were in fact comparable to the size of our own Milky Way galaxy. From this study, we suggest the possibility that galaxy collisions can indeed produce large rotating disk galaxies in the local universe.
All 2014 2013 Other
All Journal Article (2 results) (of which Peer Reviewed: 1 results, Open Access: 1 results, Acknowledgement Compliant: 1 results) Presentation (11 results) (of which Invited: 2 results) Remarks (3 results)
The Astrophysical Journal Supplement
Volume: 214 Issue: 1 Pages: 1-29
10.1088/0067-0049/214/1/1
ASP Conference Series
Volume: 476 Pages: 61-64
http://alma-intweb.mtk.nao.ac.jp/~jueda/data/mr/index.html
http://alma.mtk.nao.ac.jp/j/news/pressrelease/201409177435.html
http://www.almaobservatory.org/en/press-room/press-releases/751-violent-origins-of-pancake-galaxies-probed-by-alma