2010ApJS..191..423H

Query : 2010ApJS..191..423H

2010ApJS..191..423H - Astrophys. J., Suppl. Ser., 191, 423-438 (2010/December-0)

The Atacama Cosmology Telescope (ACT): beam profiles and first SZ cluster maps.

HINCKS A.D., ACQUAVIVA V., ADE P.A.R., AGUIRRE P., AMIRI M., APPEL J.W., BARRIENTOS L.F., BATTISTELLI E.S., BOND J.R., BROWN B., BURGER B., CHERVENAK J., DAS S., DEVLIN M.J., DICKER S.R., DORIESE W.B., DUNKLEY J., DUNNER R., ESSINGER-HILEMAN T., FISHER R.P., FOWLER J.W., HAJIAN A., HALPERN M., HASSELFIELD M., HERNANDEZ-MONTEAGUDO C., HILTON G.C., HILTON M., HLOZEK R., HUFFENBERGER K.M., HUGHES D.H., HUGHES J.P., INFANTE L., IRWIN K.D., JIMENEZ R., JUIN J.B., KAUL M., KLEIN J., KOSOWSKY A., LAU J.M., LIMON M., LIN Y.-T., LUPTON R.H., MARRIAGE T.A., MARSDEN D., MARTOCCI K., MAUSKOPF P., MENANTEAU F., MOODLEY K., MOSELEY H., NETTERFIELD C.B., NIEMACK M.D., NOLTA M.R., PAGE L.A., PARKER L., PARTRIDGE B., QUINTANA H., REID B., SEHGAL N., SIEVERS J., SPERGEL D.N., STAGGS S.T., STRYZAK O., SWETZ D.S., SWITZER E.R., THORNTON R., TRAC H., TUCKER C., VERDE L., WARNE R., WILSON G., WOLLACK E. and ZHAO Y.

Abstract (from CDS):

The Atacama Cosmology Telescope (ACT) is currently observing the cosmic microwave background with arcminute resolution at 148 GHz, 218 GHz, and 277 GHz. In this paper, we present ACT's first results. Data have been analyzed using a maximum-likelihood map-making method which uses B-splines to model and remove the atmospheric signal. It has been used to make high-precision beam maps from which we determine the experiment's window functions. This beam information directly impacts all subsequent analyses of the data. We also used the method to map a sample of galaxy clusters via the Sunyaev-Zel'dovich (SZ) effect and show five clusters previously detected with X-ray or SZ observations. We provide integrated Compton-y measurements for each cluster. Of particular interest is our detection of the z = 0.44 component of A3128 and our current non-detection of the low-redshift part, providing strong evidence that the further cluster is more massive as suggested by X-ray measurements. This is a compelling example of the redshift-independent mass selection of the SZ effect.

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Journal keyword(s): cosmic background radiation - cosmology: observations - galaxies: clusters: general - methods: data analysis

Simbad objects: 9

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Number of rows : 9
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 ACO S 295 ClG 02 45 35.80 -53 02 16.8           ~ 86 0
2 NAME HOR-RET SUPERCL SCG 03 16 -48.0           ~ 70 3
3 ACO 3128 ClG 03 29 50.6 -52 34 48           ~ 183 3
4 ACT-CL J0509-5345 ClG 05 09.0 -53 45           ~ 2 0
5 ACT-CL J0516-5432 ClG 05 16.0 -54 32           ~ 1 0
6 ACT-CL J0546.6-5345 ClG 05 46 37.6557 -53 45 33.242           ~ 98 0
7 ACO S 592 ClG 06 38 49.40 -53 58 40.8           ~ 75 0
8 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
9 ACO 592 ClG 07 42 31.1486 +09 22 25.893           ~ 62 1

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