Ade, P.A.R. and Aghanim, N. and Arnaud, M. and Ashdown, M. and Atrio-Barandela, F. and Aumont, J. and Baccigalupi, C. and Balbi, A. and Banday, A.J. and Barreiro, R.B. and Barrena, R. and Bartlett, J.G. and Battaner, E. and Benabed, K. and Bernard, J.-P. and Bersanelli, M. and Bikmaev, I. and Bock, J.J. and Böhringer, H. and Bonaldi, A. and Bond, J.R. and Borrill, J. and Bouchet, F.R. and Bourdin, H. and Burenin, R. and Burigana, C. and Butler, R.C. and Cabella, P. and Chamballu, A. and Chary, R.-R. and Chiang, L.-Y. and Chon, G. and Christensen, P.R. and Clements, D.L. and Colafrancesco, S. and Colombi, S. and Colombo, L.P.L. and Comis, B. and Coulais, A. and Crill, B.P. and Cuttaia, F. and Da Silva, A. and Dahle, H. and Davis, R.J. and De Bernardis, P. and de Gasperis, G. and de Rosa, A. and de Zotti, G. and Delabrouille, J. and Démoclès, J. and Diego, J.M. and Dole, H. and Donzelli, S. and Dore, O. and Douspis, M. and Dupac, X. and Efstathiou, G. and Enßlin, T.A. and Finelli, F. and Flores-Cacho, I. and Forni, O. and Frailis, M. and Franceschi, E. and Frommert, M. and Galeotta, S. and Ganga, K. and Genova-Santos, R.T. and Giard, M. and Giraud-Héraud, Y. and Gonzalez-Nuevo, J. and Gorski, K.M. and Gregorio, A. and Gruppuso, A. and Hansen, F.K. and Harrison, D. and Hernandez-Monteagudo, C. and Herranz, D. and Hildebrandt, S.R. and Hivon, E. and Hobson, M. and Holmes, W.A. and Hornstrup, A. and Hovest, W. and Huffenberger, K.M. and Hurier, G. and Jaffe, A.H. and Jaffe, T.R. and Jones, W.C. and Juvela, M. and Keihanen, E. and Keskitalo, R. and Khamitov, I. and Kisner, T.S. and Kneissl, R. and Knoche, J. and Kunz, M. and Kurki-Suonio, H. and Lahteenmaki, A. and Lamarre, J.-M. and Lasenby, A. and Lawrence, C.R. and Le Jeune, M. and Leonardi, R. and Lilje, P.B. and Linden-Vornle, M. and Lopez-Caniego, M. and Lubin, P.M. and Luzzi, G. and Macias-Perez, J.F. and MacTavish, C.J. and Maffei, B. and Maino, D. and Mandolesi, N. and Maris, M. and Marleau, F. and Marshall, D.J. and Martinez-Gonzalez, E. and Masi, S. and Massardi, M. and Matarrese, S. and Mazzotta, P. and Mei, S. and Melchiorri, A. and Melin, J.-B. and Mendes, L. and Mennella, A. and Mitra, S. and Miville-Deschenes, M.-A. and Moneti, A. and Montier, L. and Morgante, G. and Mortlock, D. and Munshi, D. and Murphy, J.Anthony and Naselsky, P. and Nati, F. and Natoli, P. and Norgaard-Nielsen, H.U. and Noviello, F. and Novikov, D. and Novikov, I. and Osborne, S. and Oxborrow, C.A. and Pajot, F. and Paoletti, D. and Perotto, L. and Perrotta, F. and Piacentini, F. and Piat, M. and Pierpaoli, E. and Piffaretti, R. and Plaszczynski, S. and Pointecouteau, E. and Polenta, G. and Popa, L. and Poutanen, T. and Pratt, G.W. and Prunet, S. and Puget, J.-L. and Rachen, J.P. and Rebolo, R. and Reinecke, M. and Remazeilles, M. and Renault, C. and Ricciardi, S. and Ristorcelli, I. and Rocha, G. and Roman, M. and Rosset, C. and Rossetti, M. and Rubino-Martin, J.A. and Rusholme, B. and Sandri, M. and Savini, G. and Scott, D. and Spencer, L. and Starck, J.-L. and Stolyarov, V. and Sudiwala, R. and Sunyaev, R. and Sutton, D. and Suur-Uski, A.-S. and Sygnet, J.-F. and Tauber, J.A. and Terenzi, L. and Toffolatti, L. and Tomasi, M. and Tristram, M. and Valenziano, L. and Van Tent, B. and Vielva, P. and Villa, F. and Vittorio, N. and Wade, L.A. and Wandelt, B.D. and Wang, W. and Welikala, N. and Weller, J. and White, M. and White, S.D.M. and Yvon, D. and Zacchei, A. and Zonca, A. (2013) Planck intermediate results XI. The gas content of dark matter halos: the Sunyaev-Zeldovich-stellar mass relation for locally brightest galaxies. Astronomy & Astrophysics, 557 (A52). ISSN 0004-6361

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Abstract

We present the scaling relation between Sunyaev-Zeldovich (SZ) signal and stellar mass for almost 260,000 locally brightest galaxies (LBGs) selected from the Sloan Digital Sky Survey (SDSS). These are predominantly the central galaxies of their dark matter halos. We calibrate the stellar-to-halo mass conversion using realistic mock catalogues based on the Millennium Simulation. Applying a multi-frequency matched filter to the Planck data for each LBG, and averaging the results in bins of stellar mass, we measure the mean SZ signal down to M∗ ~ 2 × 1011 M⊙, with a clear indication of signal at even lower stellar mass. We derive the scaling relation between SZ signal and halo mass by assigning halo properties from our mock catalogues to the real LBGs and simulating the Planck observation process. This relation shows no evidence for deviation from a power law over a halo mass range extending from rich clusters down to M500 ~ 2 × 1013 M⊙, and there is a clear indication of signal down to M500 ~ 4 × 1012 M⊙. Planck’s SZdetections in such low-mass halos imply that about a quarter of all baryons have now been seen in the form of hot halo gas, and that this gas must be less concentrated than the dark matter in such halos in order to remain consistent with X-ray observations. At the high-mass end, the measured SZ signal is 20% lower than found from observations of X-ray clusters, a difference consistent with the magnitude of Malmquist bias effects that were previously estimated for the X-ray sample.

Item Type:	Article
Keywords:	Planck Collaboration; cosmology: observations; cosmic background radiation; large-scale structure of Universe; galaxies: clusters: general;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	14261
Identification Number:	https://doi.org/10.1051/0004-6361/201220941
Depositing User:	Dr. Anthony Murphy
Date Deposited:	26 Mar 2021 11:05
Journal or Publication Title:	Astronomy & Astrophysics
Publisher:	EDP Sciences
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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