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 , Serge Gratton , A. Gregorio , A. Gruppuso , D. J. 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 , Francesca Villa , N. Vittorio , L.A. Wade , B.D. Wandelt (5) , A. Wilkinson , D. Yvon (14) , A. Zacchei , J.A. Zensus , A. Zonca

1 IAS - Institut d'astrophysique spatiale
2 AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation
3 IRAP - Institut de recherche en astrophysique et planétologie
4 APC - Cosmologie
5 IAP - Institut d'Astrophysique de Paris
6 NEEL - HELFA - Hélium : du fondamental aux applications
7 APC (UMR_7164) - AstroParticule et Cosmologie
8 LTCI - Laboratoire Traitement et Communication de l'Information
9 LERMA - Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique
10 LAL - Laboratoire de l'Accélérateur Linéaire
11 APC-Gravitation - APC - Gravitation
12 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
13 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
14 DPhP - Département de Physique des Particules (ex SPP)
15 LRI - Laboratoire de Recherche en Informatique

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.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]; Cosmologie et astrophysique extra-galactique [astro-ph.CO]

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, 2011, 536, pp.A14. ⟨10.1051/0004-6361/201116475⟩. ⟨in2p3-00554684⟩