2011A&A...536A..26P

Query : 2011A&A...536A..26P

2011A&A...536A..26P - Astronomy and Astrophysics, volume 536A, 26-26 (2011/12-1)

Planck early results. XXVI. Detection with planck and confirmation by XMM-Newton of PLCK G266.6-27.3, an exceptionally X-ray luminous and massive galaxy cluster at z ∼ 1.

PLANCK COLLABORATION, AGHANIM N., ARNAUD M., ASHDOWN M., ATRIO-BARANDELA F., AUMONT J., BACCIGALUPI C., BALBI A., BANDAY A.J., BARREIRO R.B., BARTLETT J.G., BATTANER E., BENABED K., BENOIT A., BERNARD J.-P., BERSANELLI M., BHATIA R., BOEHRINGER H., BONALDI A., BOND J.R., BORGANI S., BORRILL J., BOUCHET F.R., BROWN M.L., BURIGANA C., CABELLA P., CANTALUPO C.M., CAPPELLINI B., CARVALHO P., CATALANO A., CAYON L., CHIANG L.-Y., CHIANG C., CHON G., CHRISTENSEN P.R., CHURAZOV E., CLEMENTS D.L., COLAFRANCESCO S., COLOMBI S., CRILL B.P., CUTTAIA F., DA SILVA A., DAHLE H., DANESE L., D'ARCANGELO O., DAVIS R.J., DE BERNARDIS P., DE GASPERIS G., DE ZOTTI G., DELABROUILLE J., DELOUIS J.-M., DEMOCLES J., DESERT F.-X., DICKINSON C., DIEGO J.M., DOLE H., DONZELLI S., DORE O., DOUSPIS M., DUPAC X., EFSTATHIOU G., ENSSLIN T.A., ERIKSEN H.K., FINELLI F., FLORES-CACHO I., FORNI O., FOSALBA P., FRAILIS M., FRANCESCHI E., FROMENTEAU S., GALEOTTA S., GANGA K., GENOVA-SANTOS R.T., GIARD M., GONZALEZ-NUEVO J., GONZALEZ-RIESTRA R., GORSKI K.M., GREGORIO A., GRUPPUSO A., HANSEN F.K., HARRISON D., HEINAEMAEKI P., HERNANDEZ-MONTEAGUDO C., HILDEBRANDT S.R., HIVON E., HOBSON M., HURIER G., JAFFE A.H., JONES W.C., JUVELA M., KEIHAENEN E., KESKITALO R., KISNER T.S., KNEISSL R., KURKI-SUONIO H., LAGACHE G., LAEHTEENMAEKI A., LAMARRE J.-M., LASENBY A., LAWRENCE C.R., LE JEUNE M., LEACH S., LEONARDI R., LEROY C., LIDDLE A., LILJE P.B., LOPEZ-CANIEGO M., LUZZI G., MACIAS-PEREZ J.F., MAINO D., MANDOLESI N., MARLEAU F., MARTINEZ-GONZALEZ E., MASI S., MATARRESE S., MAZZOTTA P., MEINHOLD P.R., MELCHIORRI A., MELIN J.-B., MENDES L., MENNELLA A., MIVILLE-DESCHENES M.-A., MONETI A., MONTIER L., MORGANTE G., MORTLOCK D., MUNSHI D., NASELSKY P., NATOLI P., NEVALAINEN J., NORGAARD-NIELSEN H.U., NOVIELLO F., NOVIKOV D., NOVIKOV I., O'DWYER I.J., OSBORNE S., PALADINI R., PASIAN F., PATANCHON G., PEARSON T.J., PERDEREAU O., PEROTTO L., PERROTTA F., PIACENTINI F., PIERPAOLI E., PIFFARETTI R., PLATANIA P., POINTECOUTEAU E., POLENTA G., PONTHIEU N., POPA L., POUTANEN T., PRATT G.W., PREZEAU G., PRUNET S., PUGET J.-L., RACHEN J.P., REBOLO R., REINECKE M., RENAULT C., RICCIARDI S., RILLER T., RISTORCELLI I., ROCHA G., RUBINO-MARTIN J.A., SAAR E., SANDRI M., SAVINI G., SCHAEFER B.M., SCOTT D., SMOOT G.F., STARCK J.-L., SUTTON D., SYGNET J.-F., TAUBER J.A., TERENZI L., TOFFOLATTI L., TOMASI M., TRISTRAM M., TUERLER M., VALENZIANO L., VIELVA P., VILLA F., VITTORIO N., WADE L.A., WANDELT B.D., WELLER J., WHITE S.D.M., WHITE M., YVON D., ZACCHEI A. and ZONCA A.

Abstract (from CDS):

We present first results on PLCKG266.6-27.3, a galaxy cluster candidate detected at a signal-to-noise ratio of 5 in the Planck All Sky survey. An XMM-Newton validation observation has allowed us to confirm that the candidate is a bona fide galaxy cluster. With these X-ray data we measure an accurate redshift, z=0.94±0.02, and estimate the cluster mass to be M₅₀₀=(7.8±0.8)x10¹⁴M_☉. PLCKG266.6-27.3 is an exceptional system: its luminosity of L_X[0.5-2.0keV]=(1.4±0.05)x10⁴⁵erg/s equals that of the two most luminous known clusters in the z > 0.5 universe, and it is one of the most massive clusters at z∼1. Moreover, unlike the majority of high-redshift clusters, PLCKG266.6-27.3 appears to be highly relaxed. This observation confirms Planck's capability of detecting high-redshift, high-mass clusters, and opens the way to the systematic study of population evolution in the exponential tail of the mass function.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - galaxies: clusters: general - galaxies: clusters: intracluster medium - X-rays: galaxies: clusters - background radiation cosmic

Simbad objects: 8

Full paper

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Number of rows : 8

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Sp type	#ref 1850 - 2023	#notes
1	PLCKESZ G266.6-27.3	ClG	06 15 56.2665	-57 45 50.508	~	54	0
2	B3 0714+378	Rad	07 17 36.50	+37 45 23.0	~	169	2
3	ClG J0717+3745	ClG	07 17 36.50	+37 45 23.0	~	457	0
4	[BCH2008] 146	ClG	10 53 24.78	+57 23 48.2	~	6	0
5	ClG J1347-1145	ClG	13 47 30.5	-11 45 07	~	536	0
6	ClG J1449+0856	ClG	14 49.0	+08 56	~	57	0
7	ACT-CL J2106.0-5844	ClG	21 06 04.3	-58 44 32	~	87	0
8	ClG J2235-2557	ClG	22 35 20.6	-25 57 42	~	146	0

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