Y1 is an ultra-luminous infrared galaxy, ALMA observations reveal

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Using the Atacama Large Millimeter/submillimeter Array (ALMA), an international team of astronomers has inspected a distant galaxy designated MACS0416_Y1. Results of the observations, presented Nov. 11 on the arXiv pre-print server, indicate that MACS0416_Y1 is an ultra-luminous infrared galaxy.