Planck early results. XIV

ERCSC validation and extreme radio sources

Jussi Tuovinen, Jussi Varis, B. Partridge (Corresponding Author), Planck Collaboration

Research output: Contribution to journalArticleScientificpeer-review

32 Citations (Scopus)

Abstract

Planck’s all-sky surveys at 30−857 GHz provide an unprecedented opportunity to follow the radio spectra of a large sample of extragalactic sources to frequencies 2−20 times higher than allowed by past, large-area, ground-based surveys. We combine the results of the Planck Early Release Compact Source Catalog (ERCSC) with quasi-simultaneous ground-based observations as well as archival data at frequencies below or overlapping Planck frequency bands, to validate the astrometry and photometry of the ERCSC radio sources and study the spectral features shown in this new frequency window opened by Planck. The ERCSC source positions and flux density scales are found to be consistent with the ground-based observations. We present and discuss the spectral energy distributions of a sample of “extreme” radio sources, to illustrate the richness of the ERCSC for the study of extragalactic radio sources. Variability is found to play a role in the unusual spectral features of some of these sources.
Original languageEnglish
Article numberA14
Number of pages18
JournalAstronomy and Astrophysics
Volume536
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed

Fingerprint

catalogs
radio
extragalactic radio sources
radio spectra
astrometry
spectral energy distribution
photometry
flux density
energy

Keywords

  • Galaxies
  • general
  • radiation mechanisms
  • radio continuum
  • surveys

Cite this

Tuovinen, Jussi ; Varis, Jussi ; Partridge, B. ; Planck Collaboration. / Planck early results. XIV : ERCSC validation and extreme radio sources. In: Astronomy and Astrophysics. 2011 ; Vol. 536.
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abstract = "Planck’s all-sky surveys at 30−857 GHz provide an unprecedented opportunity to follow the radio spectra of a large sample of extragalactic sources to frequencies 2−20 times higher than allowed by past, large-area, ground-based surveys. We combine the results of the Planck Early Release Compact Source Catalog (ERCSC) with quasi-simultaneous ground-based observations as well as archival data at frequencies below or overlapping Planck frequency bands, to validate the astrometry and photometry of the ERCSC radio sources and study the spectral features shown in this new frequency window opened by Planck. The ERCSC source positions and flux density scales are found to be consistent with the ground-based observations. We present and discuss the spectral energy distributions of a sample of “extreme” radio sources, to illustrate the richness of the ERCSC for the study of extragalactic radio sources. Variability is found to play a role in the unusual spectral features of some of these sources.",
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Planck early results. XIV : ERCSC validation and extreme radio sources. / Tuovinen, Jussi; Varis, Jussi; Partridge, B. (Corresponding Author); Planck Collaboration.

In: Astronomy and Astrophysics, Vol. 536, A14, 2011.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Planck early results. XIV

T2 - ERCSC validation and extreme radio sources

AU - Ade, P.A.R.

AU - Aghanim, N.

AU - Angelakis, E.

AU - Tuovinen, Jussi

AU - Varis, Jussi

AU - Partridge, B.

AU - Planck Collaboration

N1 - Project code: 18080

PY - 2011

Y1 - 2011

N2 - Planck’s all-sky surveys at 30−857 GHz provide an unprecedented opportunity to follow the radio spectra of a large sample of extragalactic sources to frequencies 2−20 times higher than allowed by past, large-area, ground-based surveys. We combine the results of the Planck Early Release Compact Source Catalog (ERCSC) with quasi-simultaneous ground-based observations as well as archival data at frequencies below or overlapping Planck frequency bands, to validate the astrometry and photometry of the ERCSC radio sources and study the spectral features shown in this new frequency window opened by Planck. The ERCSC source positions and flux density scales are found to be consistent with the ground-based observations. We present and discuss the spectral energy distributions of a sample of “extreme” radio sources, to illustrate the richness of the ERCSC for the study of extragalactic radio sources. Variability is found to play a role in the unusual spectral features of some of these sources.

AB - Planck’s all-sky surveys at 30−857 GHz provide an unprecedented opportunity to follow the radio spectra of a large sample of extragalactic sources to frequencies 2−20 times higher than allowed by past, large-area, ground-based surveys. We combine the results of the Planck Early Release Compact Source Catalog (ERCSC) with quasi-simultaneous ground-based observations as well as archival data at frequencies below or overlapping Planck frequency bands, to validate the astrometry and photometry of the ERCSC radio sources and study the spectral features shown in this new frequency window opened by Planck. The ERCSC source positions and flux density scales are found to be consistent with the ground-based observations. We present and discuss the spectral energy distributions of a sample of “extreme” radio sources, to illustrate the richness of the ERCSC for the study of extragalactic radio sources. Variability is found to play a role in the unusual spectral features of some of these sources.

KW - Galaxies

KW - general

KW - radiation mechanisms

KW - radio continuum

KW - surveys

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M3 - Article

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JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

M1 - A14

ER -