Integrated field spectroscopy of E+A (post‐starburst) galaxies with the Kyoto tridimensional spectrograph II
作者： Tomotsugu Goto , Atsushi Kawai , Atsushi Shimono , Hajime Sugai , Masafumi Yagi
DOI: 10.1111/J.1365-2966.2008.12916.X
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摘要: We have performed two-dimensional spectroscopy of three nearby E+A (post-starburst) galaxies with the Kyoto tridimensional spectrograph II (Kyoto3DII) integral field spectrograph. In all cases, Hδ absorption is stronger at centre galaxies, but significantly extended scale a few kiloparsec. For one galaxy (J1656), we found close companion same redshift. The turned out to be star-forming strong emission in Hy. other two that central post-starburst regions possibly extend toward direction tidal tails. Our results are consistent merger/interaction origin where infalling-gas caused by galaxy-galaxy merging creates starburst, succeeded (E+A) phase once gas depleted.
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