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An Excess of Dusty Starbursts at z = 2.2

Published online by Cambridge University Press:  09 February 2015

Helmut Dannerbauer
Helmut Dannerbauer*
Affiliation:
Department for Astrophysics, University of Vienna, Türkenschanzstr. 17, 1180 Vienna, Austria
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Abstract

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Searching for massive, dusty starbursts offers the great opportunity to trace galaxy overdensities and thus the cosmic web in the distant universe. I will present our APEX-LABOCA 870 μm imaging of the protocluster field of the radio galaxy MRC1138–262 — the so-called Spiderweb Galaxy — at z = 2.16, uncovering a large number of so-called submm galaxies (SMGs). The number counts already indicate an excess of SMGs compared to blank fields. Based on an exquisite multi-wavelength dataset, I will show that a large fraction of these massive, dusty starbursts are physically associated with the protocluster at z = 2.16. Finally, I will discuss both the properties of this starburst overdensity and their individual members.

Keywords

galaxies: individual: MRC1138–262 — galaxies: clusters: individual: MRC1138–262 — galaxies: high redshift — cosmology: observations — Infrared: galaxies — submillimeter: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S309: Galaxies in 3D across the Universe , July 2014 , pp. 259 - 264
Copyright
Copyright © International Astronomical Union 2015 

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