The first VLBI image of an infrared-faint radio source

E. Middelberg; R. P. Norris; S. Tingay; M. Y. Mao; C. J. Phillips; A. W. Hotan

doi:10.1051/0004-6361:200810454

The first VLBI image of an infrared-faint radio source

E. Middelberg, R. P. Norris, S. Tingay, M. Y. Mao, C. J. Phillips, A. W. Hotan

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

Abstract

Context. We investigate the joint evolution of active galactic nuclei and star formation in the Universe. Aims. In the 1.4GHz survey with the Australia Telescope Compact Array of the Chandra Deep Field South and the European Large Area ISO Survey-S1 we have identified a class of objects which are strong in the radio but have no detectable infrared and optical counterparts. This class has been called Infrared-Faint Radio Sources, or IFRS. 53 sources out of 2002 have been classified as IFRS. It is not known what these objects are.Methods. To address the many possible explanations as to what the nature of these objects is we have observed four sources with the Australian Long Baseline Array.Results. We have detected and imaged one of the four sources observed. Assuming that the source is at a high redshift, we find its properties in agreement with properties of Compact Steep Spectrum sources. However, due to the lack of optical and infrared data the constraints are not particularly strong.

Original language	English
Pages (from-to)	435-439
Number of pages	5
Journal	Astronomy and Astrophysics
Volume	491
Issue number	2
DOIs	https://doi.org/10.1051/0004-6361:200810454
Publication status	Published - 2008

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10.1051/0004-6361:200810454

Cite this

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title = "The first VLBI image of an infrared-faint radio source",

abstract = "Context. We investigate the joint evolution of active galactic nuclei and star formation in the Universe. Aims. In the 1.4GHz survey with the Australia Telescope Compact Array of the Chandra Deep Field South and the European Large Area ISO Survey-S1 we have identified a class of objects which are strong in the radio but have no detectable infrared and optical counterparts. This class has been called Infrared-Faint Radio Sources, or IFRS. 53 sources out of 2002 have been classified as IFRS. It is not known what these objects are.Methods. To address the many possible explanations as to what the nature of these objects is we have observed four sources with the Australian Long Baseline Array.Results. We have detected and imaged one of the four sources observed. Assuming that the source is at a high redshift, we find its properties in agreement with properties of Compact Steep Spectrum sources. However, due to the lack of optical and infrared data the constraints are not particularly strong.",

author = "E. Middelberg and Norris, {R. P.} and S. Tingay and Mao, {M. Y.} and Phillips, {C. J.} and Hotan, {A. W.}",

year = "2008",

doi = "10.1051/0004-6361:200810454",

language = "English",

volume = "491",

pages = "435--439",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

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T1 - The first VLBI image of an infrared-faint radio source

AU - Middelberg, E.

AU - Norris, R. P.

AU - Tingay, S.

AU - Mao, M. Y.

AU - Phillips, C. J.

AU - Hotan, A. W.

PY - 2008

Y1 - 2008

N2 - Context. We investigate the joint evolution of active galactic nuclei and star formation in the Universe. Aims. In the 1.4GHz survey with the Australia Telescope Compact Array of the Chandra Deep Field South and the European Large Area ISO Survey-S1 we have identified a class of objects which are strong in the radio but have no detectable infrared and optical counterparts. This class has been called Infrared-Faint Radio Sources, or IFRS. 53 sources out of 2002 have been classified as IFRS. It is not known what these objects are.Methods. To address the many possible explanations as to what the nature of these objects is we have observed four sources with the Australian Long Baseline Array.Results. We have detected and imaged one of the four sources observed. Assuming that the source is at a high redshift, we find its properties in agreement with properties of Compact Steep Spectrum sources. However, due to the lack of optical and infrared data the constraints are not particularly strong.

AB - Context. We investigate the joint evolution of active galactic nuclei and star formation in the Universe. Aims. In the 1.4GHz survey with the Australia Telescope Compact Array of the Chandra Deep Field South and the European Large Area ISO Survey-S1 we have identified a class of objects which are strong in the radio but have no detectable infrared and optical counterparts. This class has been called Infrared-Faint Radio Sources, or IFRS. 53 sources out of 2002 have been classified as IFRS. It is not known what these objects are.Methods. To address the many possible explanations as to what the nature of these objects is we have observed four sources with the Australian Long Baseline Array.Results. We have detected and imaged one of the four sources observed. Assuming that the source is at a high redshift, we find its properties in agreement with properties of Compact Steep Spectrum sources. However, due to the lack of optical and infrared data the constraints are not particularly strong.

UR - http://handle.uws.edu.au:8081/1959.7/546619

U2 - 10.1051/0004-6361:200810454

DO - 10.1051/0004-6361:200810454

M3 - Article

SN - 0004-6361

VL - 491

SP - 435

EP - 439

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

ER -

The first VLBI image of an infrared-faint radio source

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