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Paper: High Gas Fraction of Barred Spiral Galaxies at z ∼ 0.1–0.2
Volume: 476, New Trends in Radio Astronomy in the ALMA Era
Page: 277
Authors: Matsui, K.; Sorai, K.; Baba, J.; Watanabe, Y.; Kuno, N.
Abstract: We observed nine barred spiral galaxies at z ∼ 0.1–0.2 in CO(J=1–0) with the 45-m telescope at the Nobeyama Radio Observatory in 2010-2011 and successfully detected emissions from seven galaxies including tentative detections. The molecular gas fraction of our samples are systematically higher than the ones of local barred galaxies as well as the expected upper-limit where the bars can be formed or survive in numerical simulations. This implies that the simulations of bar formation and evolution may need a little corrections and the formation and evolution of bars must be considered in the context of the galactic disk evolution and formation, i.e., bar formation in gas-rich disks.
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