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| Titre : |
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Planck Intermediate Results. IV. The XMM-Newton validation programme for new Planck galaxy clusters |
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| Auteur : |
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P.A.R. Ade, N. Aghanim1, M. Arnaud, M. Ashdown, J. Aumont1, C. Baccigalupi, A. Balbi, A. J. Banday, R. B. Barreiro, J.G. Bartlett2, E. Battaner, K. Benabed, A. Benoît, J.-P. Bernard, M. Bersanelli, I. Bikmaev, H. Böhringer, A. Bonaldi, J. R. Bond, S. Borgani, J. Borrill, F. R. Bouchet, M. L. Brown, C. Burigana, R. C. Butler, P. Cabella, P. Carvalho, A. Catalano3, L. Cayón, A. Chamballu, R.-R. Chary, L.-Y. Chiang, G. Chon, P. R. Christensen, D. L. Clements, S. Colafrancesco, S. Colombi, A. Coulais, B. P. Crill, F. Cuttaia, A. Da Silva, H. Dahle, R. J. Davis, P. De Bernardis, G. De Gasperis, G. de Zotti, J. Delabrouille2, J. Démoclès, F.-X. Désert, J. M. Diego, K. Dolag, H. Dole1, S. Donzelli, O. Doré, M. Douspis1, X. Dupac, T. A. Enßlin, H. K. Eriksen, F. Finelli, I. Flores-Cacho, O. Forni, M. Frailis, E. Franceschi, M. Frommert, S. Galeotta, K. Ganga2, R. T. Génova-Santos, Y. Giraud-Héraud2, J. González-Nuevo, R. González-Riestra, K. M. Górski, A. Gregorio, A. Gruppuso, F. K. Hansen, D. Harrison, A. Hempel, S. Henrot-Versillé, C. Hernández-Monteagudo, D. Herranz, S. R. Hildebrandt, E. Hivon, M. Hobson, W. A. Holmes, A. Hornstrup, W. Hovest, K. M. Huffenberger, G. Hurier3, A. H. Jaffe, T. Jagemann, W. C. Jones, M. Juvela, R. Kneissl, J. Knoche, L. Knox, M. Kunz1, H. Kurki-Suonio, G. Lagache1, J.-M. Lamarre, A. Lasenby, C. R. Lawrence, M. Le Jeune2, S. Leach, R. Leonardi, A. Liddle, P. B. Lilje, M. Linden-V\ornle, M. López-Caniego, G. Luzzi4, J.F. Macías-Pérez3, D. Maino, N. Mandolesi, R. Mann, M. Maris, F. Marleau, D. J. Marshall, E. Martínez-González, S. Masi, M. Massardi, S. Matarrese, P. Mazzotta, S. Mei, P. R. Meinhold, A. Melchiorri, J.-B. Melin, L. Mendes, A. Mennella, S. Mitra, M.-A. Miville-Deschênes1, A. Moneti, G. Morgante, D. Mortlock, D. Munshi, P. Naselsky, F. Nati, P. Natoli, H.U. Norgaard-Nielsen, F. Noviello1, S. Osborne, F. Pajot1, D. Paoletti, O. Perdereau4, F. Perrotta, F. Piacentini, M. Piat2, E. Pierpaoli, R. Piffaretti, S. Plaszczynski4, P. Platania, E. Pointecouteau, G. Polenta, L. Popa, T. Poutanen, G. W. Pratt, S. Prunet, J.-L. Puget1, M. Reinecke, M. Remazeilles1, 2, C. Renault3, S. Ricciardi, G. Rocha, C. Rosset2, M. Rossetti, J. A. Rubiño-Martín, B. Rusholme, M. Sandri, G. Savini, D. Scott, G.F. Smoot2, A. Stanford, F. Stivoli, R. Sudiwala, R. Sunyaev, D. Sutton, A.-S. Suur-Uski, J.-F. Sygnet, J. A. Tauber, L. Terenzi, L. Toffolatti, M. Tomasi, M. Tristram4, L. Valenziano, B. Van Tent5, P. Vielva, F. Villa, N. Vittorio, L. A. Wade, B. D. Wandelt, N. Welikala, J. Weller, S. D. M. White, D. Yvon, A. Zacchei, A. Zonca |
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| Laboratoire : |
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| équipe(s) de recherche : |
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APC - ADAMIS
APC - Cosmologie et Gravitation |
| Résumé : |
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We present the final results from the XMM-Newton validation follow-up of new Planck galaxy cluster candidates. We observed 15 new candidates, detected with signal-to-noise ratios between 4.0 and 6.1 in the 15.5-month nominal Planck survey. The candidates were selected using ancillary data flags derived from the ROSAT All Sky Survey (RASS) and Digitized Sky Survey all-sky maps, with the aim of pushing into the low SZ flux, high-z regime and testing RASS flags as indicators of candidate reliability. 14 new clusters were detected by XMM, including 2 double systems. Redshifts lie in the range 0.2 to 0.9, with 6 clusters at z>0.5. Estimated M500 range from 2.5 10^14 to 8 10^14 Msun. We discuss our results in the context of the full XMM validation programme, in which 51 new clusters have been detected. This includes 4 double and 2 triple systems, some of which are chance projections on the sky of clusters at different z. We find that association with a RASS-BSC source is a robust indicator of the reliability of a candidate, whereas association with a FSC source does not guarantee that the SZ candidate is a bona fide cluster. Nevertheless, most Planck clusters appear in RASS maps, with a significance greater than 2 sigma being a good indication that the candidate is a real cluster. The full sample gives a Planck sensitivity threshold of Y500 ~ 4 10^-4 arcmin^2, with indication for Malmquist bias in the YX-Y500 relation below this level. The corresponding mass threshold depends on z. Systems with M500 > 5 10^14 Msun at z > 0.5 are easily detectable with Planck. The newly-detected clusters follow the YX-Y500 relation derived from X-ray selected samples. Compared to X-ray selected clusters, the new SZ clusters have a lower X-ray luminosity on average for their mass. There is no indication of departure from standard self-similar evolution in the X-ray versus SZ scaling properties. (abridged) |
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| Collaboration/Projet : |
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PLANCK |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication
ou d'écriture : |
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02/2013 |
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| Nom du périodique : |
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| Astronomy and Astrophysics (Astron. Astrophys.) |
| Publisher |
EDP Sciences |
| ISSN |
0004-6361 (eISSN : 1432-0756) |
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| Volume : |
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550 |
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| Page/Article : |
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A130 |
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| Identifiant local : |
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LAL 12-258 ; LPSC12137 |
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| Commentaire : |
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accepted by A&A |
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| Mot(s)-clé(s) : |
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Astrophysics - Cosmology and Extragalactic Astrophysics |
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