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Exploring the dusty star-formation in the early Universe using intensity mapping

Published online by Cambridge University Press:  08 May 2018

Guilaine Lagache Open the ORCID record for Guilaine Lagache [Opens in a new window]
Guilaine Lagache*
Affiliation:
Aix Marseille Univ, CNRS, LAM, Laboratoire d’Astrophysique de Marseille Marseille, France email: guilaine.lagache@lam.fr
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Abstract

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In the last decade, it has become clear that the dust-enshrouded star formation contributes significantly to early galaxy evolution. Detection of dust is therefore essential in determining the properties of galaxies in the high-redshift universe. This requires observations at the (sub-)millimeter wavelengths. Unfortunately, sensitivity and background confusion of single dish observations on the one hand, and mapping efficiency of interferometers on the other hand, pose unique challenges to observers. One promising route to overcome these difficulties is intensity mapping of fluctuations which exploits the confusion-limited regime and measures the collective light emission from all sources, including unresolved faint galaxies. We discuss in this contribution how 2D and 3D intensity mapping can measure the dusty star formation at high redshift, through the Cosmic Infrared Background (2D) and [CII] fine structure transition (3D) anisotropies.

Keywords

galaxies: high-redshiftgalaxies: formationgalaxies: evolutiongalaxies: ISMsubmillimeter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S333: Peering towards Cosmic Dawn , October 2017 , pp. 228 - 233
Copyright
Copyright © International Astronomical Union 2018 

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