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Paper: Protocluster Survey at z = 2.23: from Herschel to ALMA
Volume: 499, Revolution in Astronomy with ALMA: The Third Year
Page: 25
Authors: Kato, Y.; Matsuda, Y.; Smail, I.; Swinbank, M.; Alexander, D.; Geach, J.; Lehmer, B.; Tamura, Y.; Umehata, H.; Kohno, K.; Kubo, M.; Yamada, T.; Hayashino, T.; Erb, D.; Steidel, C.
Abstract: We present results of Herschel/SPIRE observation in 2QZ cluster at z=2.23. 2QZ cluster is discovered as an overdensity of QSOs and Hα emitters (HAEs), which was originally identified as a concentration of 5 QSOs in the 2dF Quasar Redshift survey. We find an overdensity of SPIRE color selected far-infrared bright galaxies (3.9 σ compared with COSMOS field) ∼5' west of the HAEs density peak of in a radius of 6 co-Mpc. This suggests 2QZ cluster is experiencing enhanced dusty star-formation. However, SPIRE color selection with S500/S350 vs S350/S250 has a redshift uncertainty, we need spectroscopic observation with ALMA to confirm the precise redshifts.
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