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The Herschel Virgo Cluster Survey XV. Planck submillimetre sources in the Virgo Cluster

Baes, M., Herranz, D., Bianchi, S., Ciesla, L., Clemens, M., De Zotti, G., Allaert, F., Auld, R., Bendo, G. J., Boquien, M., Boselli, A., Clements, D. L., Cortese, L., Davies, Jonathan Ivor, De Looze, I., di Serego Alighieri, S., Fritz, J., Gentile, G., González-Nuevo, J., Hughes, T., Smith, Matthew ORCID:, Verstappen, J., Viaene, S. and Vlahakis, C. 2014. The Herschel Virgo Cluster Survey XV. Planck submillimetre sources in the Virgo Cluster. Astronomy and Astrophysics 562 , A106. 10.1051/0004-6361/201322384

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We cross-correlate the Planck Catalogue of Compact Sources (PCCS) with the fully sampled 84 deg2Herschel Virgo Cluster Survey (HeViCS) fields. We search for and identify the 857 and 545 GHz PCCS sources in the HeViCS fields by studying their FIR/submm and optical counterparts. We find 84 and 48 compact Planck sources in the HeViCS fields at 857 and 545 GHz, respectively. Almost all sources correspond to individual bright Virgo Cluster galaxies. The vast majority of the Planck detected galaxies are late-type spirals, with the Sc class dominating the numbers, while early-type galaxies are virtually absent from the sample, especially at 545 GHz. We compare the HeViCS SPIRE flux densities for the detected galaxies with the four different PCCS flux density estimators and find an excellent correlation with the aperture photometry flux densities, even at the highest flux density levels. We find only seven PCCS sources in the HeViCS fields without a nearby galaxy as obvious counterpart, and conclude that all of these are dominated by Galactic cirrus features or are spurious detections. No Planck sources in the HeViCS fields seem to be associated to high-redshift proto-clusters of dusty galaxies or strongly lensed submm sources. Finally, our study is the first empirical confirmation of the simulation-based estimated completeness of the PCCS, and provides a strong support of the internal PCCS validation procedure.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Uncontrolled Keywords: galaxies: ISM; submillimeter: galaxies
Publisher: EDP Sciences
ISSN: 0004-6361
Date of First Compliant Deposit: 6 December 2017
Date of Acceptance: 6 January 2014
Last Modified: 04 May 2023 21:37

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