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The nature of the optically faint sub-millijansky radio sources: The VLT/VIMOS view

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

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The nature of the optically faint sub-millijansky radio sources: The VLT/VIMOS view. / Sobral, D.; Afonso, J.
2005 Past Meets Present in Astronomy and Astrophysics - Proceedings of the 15th Portuguese National Meeting, ENAA 2005. World Scientific Publishing Co. Pte Ltd, 2006. p. 75-76.

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

Harvard

Sobral, D & Afonso, J 2006, The nature of the optically faint sub-millijansky radio sources: The VLT/VIMOS view. in 2005 Past Meets Present in Astronomy and Astrophysics - Proceedings of the 15th Portuguese National Meeting, ENAA 2005. World Scientific Publishing Co. Pte Ltd, pp. 75-76, 15th Portuguese National Meeting of Astronomy and Astrophysics, ENAA 2005, Lisbon, Portugal, 28/07/05.

APA

Sobral, D., & Afonso, J. (2006). The nature of the optically faint sub-millijansky radio sources: The VLT/VIMOS view. In 2005 Past Meets Present in Astronomy and Astrophysics - Proceedings of the 15th Portuguese National Meeting, ENAA 2005 (pp. 75-76). World Scientific Publishing Co. Pte Ltd.

Vancouver

Sobral D, Afonso J. The nature of the optically faint sub-millijansky radio sources: The VLT/VIMOS view. In 2005 Past Meets Present in Astronomy and Astrophysics - Proceedings of the 15th Portuguese National Meeting, ENAA 2005. World Scientific Publishing Co. Pte Ltd. 2006. p. 75-76

Author

Sobral, D. ; Afonso, J. / The nature of the optically faint sub-millijansky radio sources : The VLT/VIMOS view. 2005 Past Meets Present in Astronomy and Astrophysics - Proceedings of the 15th Portuguese National Meeting, ENAA 2005. World Scientific Publishing Co. Pte Ltd, 2006. pp. 75-76

Bibtex

@inproceedings{c1babc573f83464eb3540e86f4874381,
title = "The nature of the optically faint sub-millijansky radio sources: The VLT/VIMOS view",
abstract = "The aim of this study is to characterize the optically faint submillijansky (sub-mjy) radio population, exploring its nature and evolution, and thus to complete recent studies which have successfully done this for optically bright sources. In order to achieve this, the VLT/VIMOS was used to obtain spectra of several tens of galaxies that are part of the Phoenix Deep Survey (PDS), a multiwavelength survey based on deep 1.4 Ghz radio imaging, reaching well into the sub-100 μJy level. The analysis of the first set of observations reveal 32 sources with a secure redshift determination having optical magnitudes 19≤R≤24 mag. Of these, 34% are star-forming galaxies, 22% are identified as Seyfert galaxies, showing active galactic nucleus signatures, 6% have absorption lines only, and the remaining 38% show narrow lines that do not allow detailed spectral classification (mainly because they are at high redshifts, or due to spectrum with poor signal-to-noise ratio). On the other hand, the sample considered in this study clearly indicates that optically faint (R≥ 19 mag) sub-mJy radio sources tend to be at higher redshifts, and have fainter radio fluxes, a result which confirms indications from previous work.",
author = "D. Sobral and J. Afonso",
year = "2006",
month = jan,
day = "1",
language = "English",
isbn = "9812568875",
pages = "75--76",
booktitle = "2005 Past Meets Present in Astronomy and Astrophysics - Proceedings of the 15th Portuguese National Meeting, ENAA 2005",
publisher = "World Scientific Publishing Co. Pte Ltd",
address = "Singapore",
note = "15th Portuguese National Meeting of Astronomy and Astrophysics, ENAA 2005 ; Conference date: 28-07-2005 Through 30-07-2005",

}

RIS

TY - GEN

T1 - The nature of the optically faint sub-millijansky radio sources

T2 - 15th Portuguese National Meeting of Astronomy and Astrophysics, ENAA 2005

AU - Sobral, D.

AU - Afonso, J.

PY - 2006/1/1

Y1 - 2006/1/1

N2 - The aim of this study is to characterize the optically faint submillijansky (sub-mjy) radio population, exploring its nature and evolution, and thus to complete recent studies which have successfully done this for optically bright sources. In order to achieve this, the VLT/VIMOS was used to obtain spectra of several tens of galaxies that are part of the Phoenix Deep Survey (PDS), a multiwavelength survey based on deep 1.4 Ghz radio imaging, reaching well into the sub-100 μJy level. The analysis of the first set of observations reveal 32 sources with a secure redshift determination having optical magnitudes 19≤R≤24 mag. Of these, 34% are star-forming galaxies, 22% are identified as Seyfert galaxies, showing active galactic nucleus signatures, 6% have absorption lines only, and the remaining 38% show narrow lines that do not allow detailed spectral classification (mainly because they are at high redshifts, or due to spectrum with poor signal-to-noise ratio). On the other hand, the sample considered in this study clearly indicates that optically faint (R≥ 19 mag) sub-mJy radio sources tend to be at higher redshifts, and have fainter radio fluxes, a result which confirms indications from previous work.

AB - The aim of this study is to characterize the optically faint submillijansky (sub-mjy) radio population, exploring its nature and evolution, and thus to complete recent studies which have successfully done this for optically bright sources. In order to achieve this, the VLT/VIMOS was used to obtain spectra of several tens of galaxies that are part of the Phoenix Deep Survey (PDS), a multiwavelength survey based on deep 1.4 Ghz radio imaging, reaching well into the sub-100 μJy level. The analysis of the first set of observations reveal 32 sources with a secure redshift determination having optical magnitudes 19≤R≤24 mag. Of these, 34% are star-forming galaxies, 22% are identified as Seyfert galaxies, showing active galactic nucleus signatures, 6% have absorption lines only, and the remaining 38% show narrow lines that do not allow detailed spectral classification (mainly because they are at high redshifts, or due to spectrum with poor signal-to-noise ratio). On the other hand, the sample considered in this study clearly indicates that optically faint (R≥ 19 mag) sub-mJy radio sources tend to be at higher redshifts, and have fainter radio fluxes, a result which confirms indications from previous work.

M3 - Conference contribution/Paper

AN - SCOPUS:84894160121

SN - 9812568875

SN - 9789812568878

SP - 75

EP - 76

BT - 2005 Past Meets Present in Astronomy and Astrophysics - Proceedings of the 15th Portuguese National Meeting, ENAA 2005

PB - World Scientific Publishing Co. Pte Ltd

Y2 - 28 July 2005 through 30 July 2005

ER -