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

    33 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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    title = "Planck early results. XIV: ERCSC validation and extreme radio sources",
    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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    author = "P.A.R. Ade and N. Aghanim and E. Angelakis and Jussi Tuovinen and Jussi Varis and B. Partridge and {Planck Collaboration}",
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    year = "2011",
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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

    U2 - 10.1051/0004-6361/201116475

    DO - 10.1051/0004-6361/201116475

    M3 - Article

    VL - 536

    JO - Astronomy and Astrophysics

    JF - Astronomy and Astrophysics

    SN - 0004-6361

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