Galaxy evolution from a microjansky radio survey

José Afonso; Bahram Mobasher; Andrew Hopkins; Antonis Georgakakis; Lawrence Cram; Ben Chan

doi:10.1023/A:1024686431681

Galaxy evolution from a microjansky radio survey

José Afonso^*, Bahram Mobasher, Andrew Hopkins, Antonis Georgakakis, Lawrence Cram, Ben Chan

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

A strong evolution of galaxies is observed for 0 < z < 1, as evidenced by an increase of almost an order of magnitude in the galaxy star-formation rate density. However, it is known that dust obscuration has affected our understanding of galaxy evolution over this significant fraction of the age of the Universe. In order to study galaxy evolution free from dust induced biases, an ultra deep radio survey - the Phoenix Deep Survey - was initiated. With a detection limit of 60 μJy, this homogeneous survey, complemented with multiwavelength (photometric and spectroscopic) observations, is being used to build a consistent picture of galaxy evolution. The ultra-deep radio source counts are presented, and interpreted using luminosity function evolutionary models. The discovery of extremely dusty galaxies from this survey, along with the clustering properties of the sub-mJy radio population, are also discussed.

Original language	English
Pages (from-to)	149-153
Number of pages	5
Journal	Astrophysics and Space Science
Volume	285
Issue number	1
DOIs	https://doi.org/10.1023/A:1024686431681
Publication status	Published - 2003
Externally published	Yes

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title = "Galaxy evolution from a microjansky radio survey",

abstract = "A strong evolution of galaxies is observed for 0 < z < 1, as evidenced by an increase of almost an order of magnitude in the galaxy star-formation rate density. However, it is known that dust obscuration has affected our understanding of galaxy evolution over this significant fraction of the age of the Universe. In order to study galaxy evolution free from dust induced biases, an ultra deep radio survey - the Phoenix Deep Survey - was initiated. With a detection limit of 60 μJy, this homogeneous survey, complemented with multiwavelength (photometric and spectroscopic) observations, is being used to build a consistent picture of galaxy evolution. The ultra-deep radio source counts are presented, and interpreted using luminosity function evolutionary models. The discovery of extremely dusty galaxies from this survey, along with the clustering properties of the sub-mJy radio population, are also discussed.",

keywords = "Radio continuum: galaxies - galaxies: evolution - galaxies: starburst",

author = "Jos{\'e} Afonso and Bahram Mobasher and Andrew Hopkins and Antonis Georgakakis and Lawrence Cram and Ben Chan",

year = "2003",

doi = "10.1023/A:1024686431681",

language = "English",

volume = "285",

pages = "149--153",

journal = "Astrophysics and Space Science",

issn = "0004-640X",

publisher = "Springer Netherlands",

number = "1",

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TY - JOUR

T1 - Galaxy evolution from a microjansky radio survey

AU - Afonso, José

AU - Mobasher, Bahram

AU - Hopkins, Andrew

AU - Georgakakis, Antonis

AU - Cram, Lawrence

AU - Chan, Ben

PY - 2003

Y1 - 2003

N2 - A strong evolution of galaxies is observed for 0 < z < 1, as evidenced by an increase of almost an order of magnitude in the galaxy star-formation rate density. However, it is known that dust obscuration has affected our understanding of galaxy evolution over this significant fraction of the age of the Universe. In order to study galaxy evolution free from dust induced biases, an ultra deep radio survey - the Phoenix Deep Survey - was initiated. With a detection limit of 60 μJy, this homogeneous survey, complemented with multiwavelength (photometric and spectroscopic) observations, is being used to build a consistent picture of galaxy evolution. The ultra-deep radio source counts are presented, and interpreted using luminosity function evolutionary models. The discovery of extremely dusty galaxies from this survey, along with the clustering properties of the sub-mJy radio population, are also discussed.

AB - A strong evolution of galaxies is observed for 0 < z < 1, as evidenced by an increase of almost an order of magnitude in the galaxy star-formation rate density. However, it is known that dust obscuration has affected our understanding of galaxy evolution over this significant fraction of the age of the Universe. In order to study galaxy evolution free from dust induced biases, an ultra deep radio survey - the Phoenix Deep Survey - was initiated. With a detection limit of 60 μJy, this homogeneous survey, complemented with multiwavelength (photometric and spectroscopic) observations, is being used to build a consistent picture of galaxy evolution. The ultra-deep radio source counts are presented, and interpreted using luminosity function evolutionary models. The discovery of extremely dusty galaxies from this survey, along with the clustering properties of the sub-mJy radio population, are also discussed.

KW - Radio continuum: galaxies - galaxies: evolution - galaxies: starburst

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U2 - 10.1023/A:1024686431681

DO - 10.1023/A:1024686431681

M3 - Article

SN - 0004-640X

VL - 285

SP - 149

EP - 153

JO - Astrophysics and Space Science

JF - Astrophysics and Space Science

IS - 1

ER -

Galaxy evolution from a microjansky radio survey

Abstract

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