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Planck early results. XIV. ERCSC validation and extreme radio sources

P.A.R. Ade N. Aghanim 1 E. Angelakis M. Arnaud 2 M. Ashdown J. Aumont 1 C. Baccigalupi A. Balbi A.J. Banday 3 R.B. Barreiro J.G. Bartlett 4 E. Battaner K. Benabed 5 A. Benoît 6 J.-P. Bernard 3 M. Bersanelli R. Bhatia A. Bonaldi L. Bonavera J.R. Bond J. Borrill F.R. Bouchet 5 M. Bucher 7 C. Burigana P. Cabella B. Cappellini J.-F. Cardoso 7, 5, 8 A. Catalano 7, 9 L. Cayon A. Challinor A. Chamballu R.-R. Chary X. Chen L.-Y. Chiang P.R. Christensen D.L. Clements S. Colombi 5 F. Couchot 10 A. Coulais 9 B.P. Crill F. Cuttaia L. Danese R.D. Davies R.J. Davis P. de Bernardis G. de Gasperis A. de Rosa G. de Zotti J. Delabrouille 11 J.-M. Delouis 5 F.-X. Désert 12 C. Dickinson S. Donzelli O. Doré U. Dörl M. Douspis 1 X. Dupac G. Efstathiou T.A. Enßlin F. Finelli O. Forni 3 M. Frailis E. Franceschi L. Fuhrmann S. Galeotta K. Ganga 7 M. Giard 3 G. Giardino Y. Giraud-Héraud 4 J. Gonzalez-Nuevo K.M. Gorski S. Gratton A. Gregorio A. Gruppuso D. Harrison S. Henrot-Versillé 10 D. Herranz S.R. Hildebrandt 13 E. Hivon 5 M. Hobson W.A. Holmes W. Hovest R.J. Hoyland K.M. Huffenberger M. Huynh A.H. Jaffe M. Juvela E. Keihänen R. Keskitalo T.S. Kisner R. Kneissl L. Knox T.P. Krichbaum H. Kurki-Suonio Guilaine Lagache 1 A. Lähteenmäki J.-M. Lamarre 9 A. Lasenby R.J. Laureijs N. Lavonen C.R. Lawrence S. Leach J.P. Leahy R. Leonardi M. Linden-Vørnle M. Lopez-Caniego P.M. Lubin J.F. Macias-Perez 13 B. Maffei D. Maino N. Mandolesi R. Mann M. Maris F. Marleau E. Martinez-Gonzalez S. Masi M. Massardi S. Matarrese F. Matthai P. Mazzotta P.R. Meinhold A. Melchiorri L. Mendes A. Mennella M. Mingaliev M.-A. Miville-Deschênes 1 A. Moneti 5 L. Montier 3 G. Morgante D. Mortlock D. Munshi A. Murphy P. Naselsky P. Natoli I. Nestoras C.B. Netterfield E. Nieppola H.U. Nørgaard-Nielsen F. Noviello 1 D. Novikov I. Novikov S. Osborne F. Pajot 1 B. Partridge F. Pasian G. Patanchon 7 T.J. Pearson O. Perdereau 10 L. Perotto 13 F. Perrotta F. Piacentini M. Piat 7 E. Pierpaoli Stéphane Plaszczynski 10 P. Platania E. Pointecouteau 3 G. Polenta N. Ponthieu 1 T. Poutanen G. Prézeau P. Procopio S. Prunet 5 J.-L. Puget 1 J.P. Rachen W.T. Reach R. Rebolo M. Reinecke C. Renault 13 S. Ricciardi T. Riller D. Riquelme I. Ristorcelli 3 G. Rocha C. Rosset 7 M. Rowan-Robinson J.A. Rubino-Martin B. Rusholme A. Sajina M. Sandri P. Savolainen D. Scott M.D. Seiffert A. Sievers G.F. Smoot 7 Y. Sotnikova Jean-Luc Starck 2, 14 F. Stivoli 15 V. Stolyarov R. Sudiwala J.-F. Sygnet 5 J. Tammi J.A. Tauber L. Terenzi L. Toffolatti M. Tomasi M. Tornikoski J.-P. Torre 1 M. Tristram 10 J. Tuovinen M. Türler M. Turunen G. Umana H. Ungerechts L. Valenziano J. Varis P. Vielva F. Villa N. Vittorio L.A. Wade B.D. Wandelt 5 A. Wilkinson D. Yvon 14 A. Zacchei J.A. Zensus A. Zonca
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 (SEDs) 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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Submitted on : Tuesday, January 11, 2011 - 9:49:49 AM
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P.A.R. Ade, N. Aghanim, E. Angelakis, M. Arnaud, M. Ashdown, et al.. Planck early results. XIV. ERCSC validation and extreme radio sources. Astronomy and Astrophysics - A&A, EDP Sciences, 2011, 536, pp.A14. ⟨10.1051/0004-6361/201116475⟩. ⟨in2p3-00554684⟩

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