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Paper: From Mahalo-Subaru to Gracias-ALMA: Resolving Galaxy Formation at Its Peak Epoch
Volume: 476, New Trends in Radio Astronomy in the ALMA Era
Page: 37
Authors: Kodama, T.; Tanaka, I.; Hayashi, M.; Koyama, Y.; Tadaki, K.; Shimakawa, R.; Kohno, K.; Tamura, Y.
Abstract: The redshift interval of 1.5–2.5 is the critical era for galaxy formation and early evolution when the star forming and AGN activities are both highest. Also, these activities should be dependent on environment given the clear habitat segregation of different types of galaxies seen today. It is essential therefore to systematically search for star forming galaxies over this critical epoch and across different environments, and investigate their physical properties in detail. For this purpose, we design a fully coordinated program between Subaru and ALMA. With Subaru, we have been conducting the Mahalo-Subaru project which maps out star-forming galaxies (Hɑ and OII emitters) at 1.5 ≤ z ≤ 2.5 across various environments, by employing the unique set of custom-made narrow-band filters and wide-field cameras. With ALMA, we propose to conduct the Gracias-ALMA project which aims to observe CO lines and dust continua of star forming galaxies with great spatial resolution and high sensitivity, based on our Mahalo-Subaru sample. We will scrutinize the physical states and the mode of star formation both globally and locally within galaxies, and identify the physical processes that regulate star-forming activities as a function of time and environment.
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