2012ApJ...753..164S

Query : 2012ApJ...753..164S

2012ApJ...753..164S - Astrophys. J., 753, 164 (2012/July-2)

IDCS J1426.5+3508: discovery of a massive, infrared-selected galaxy cluster at z = 1.75.

STANFORD S.A., BRODWIN M., GONZALEZ A.H., ZEIMANN G., STERN D., DEY A., EISENHARDT P.R., SNYDER G.F. and MANCONE C.

Abstract (from CDS):

We report the discovery of an IR-selected massive galaxy cluster in the IRAC Deep Cluster Survey (IDCS). We present new data from the Hubble Space Telescope and the W. M. Keck Observatory that spectroscopically confirm IDCS J1426.5+3508 at z = 1.75. Moreover, the cluster is detected in archival Chandra data as an extended X-ray source, comprising 53 counts after the removal of point sources. We calculate an X-ray luminosity of L0.5–2keV= (5.4±1.2)x1044erg/s within r=60arcsec (∼1Mpc diameter), which implies M200=5.3±1.6x1014M☉. IDCS J1426.5+3508 appears to be an exceptionally massive cluster for its redshift.

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Journal keyword(s): galaxies: clusters: individual: IDCS J1426.5+3508 - galaxies: distances and redshifts - galaxies: evolution

Nomenclature: Table 1: [SBG2012] JHHMMSS.s+DDMMSS N=7

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 Feige 34 HS* 10 39 36.7358839104 +43 06 09.212615280 9.613 10.91 11.14 11.319 11.464 sdOp 731 0
2 [SBG2012] J142628.1+350829 G 14 26 28.15 +35 08 29.7           ~ 1 0
3 IDCS J1426.5+3508 ClG 14 26.5 +35 08           ~ 64 0
4 SDSS J142632.40+350830.8 QSO 14 26 32.4052145424 +35 08 30.902259912       19.93 19.47 ~ 3 0
5 [SBG2012] J142632.5+350822 G 14 26 32.55 +35 08 22.5           ~ 1 0
6 [SBG2012] J142632.8+350844 G 14 26 32.85 +35 08 44.4           ~ 1 0
7 [SBG2012] J142632.9+350823 G 14 26 32.95 +35 08 23.6           ~ 2 0
8 [SBG2012] J142634.4+350825 G 14 26 34.43 +35 08 25.1           ~ 1 0
9 [SBG2012] J142634.4+350822 G 14 26 34.47 +35 08 22.4           ~ 1 0
10 NAME NOAO Deep Wide Field reg 14 32 05.75 +34 16 47.5           ~ 430 0
11 HD 340611 WD* 20 34 21.8847019255 +25 03 49.750446346 10.687 11.471 11.546 11.648 11.728 DA2.4 329 0
12 ClG J2235-2557 ClG 22 35 20.6 -25 57 42           ~ 151 0

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