2015ApJ...799..137S


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.25CEST02:03:00

2015ApJ...799..137S - Astrophys. J., 799, 137 (2015/February-1)

Measurement of galaxy cluster integrated comptonization and mass scaling relations with the South Pole telescope.

SALIWANCHIK B.R., MONTROY T.E., AIRD K.A., BAYLISS M., BENSON B.A., BLEEM L.E., BOCQUET S., BRODWIN M., CARLSTROM J.E., CHANG C.L., CHO H.M., CLOCCHIATTI A., CRAWFORD T.M., CRITES A.T., DE HAAN T., DESAI S., DOBBS M.A., DUDLEY J.P., FOLEY R.J., FORMAN W.R., GEORGE E.M., GLADDERS M.D., GONZALEZ A.H., HALVERSON N.W., HLAVACEK-LARRONDO J., HOLDER G.P., HOLZAPFEL W.L., HRUBES J.D., JONES C., KEISLER R., KNOX L., LEE A.T., LEITCH E.M., LIU J., LUEKER M., LUONG-VAN D., MANTZ A., MARRONE D.P., McDONALD M., McMAHON J.J., MEHL J., MEYER S.S., MOCANU L., MOHR J.J., MURRAY S.S., NURGALIEV D., PADIN S., PATEJ A., PRYKE C., REICHARDT C.L., REST A., RUEL J., RUHL J.E., SARO A., SAYRE J.T., SCHAFFER K.K., SHIROKOFF E., SPIELER H.G., STALDER B., STANFORD S.A., STANISZEWSKI Z., STARK A.A., STORY K., STUBBS C.W., VANDERLINDE K., VIEIRA J.D., VIKHLININ A., WILLIAMSON R., ZAHN O. and ZENTENO A.

Abstract (from CDS):

We describe a method for measuring the integrated Comptonization (YSZ) of clusters of galaxies from measurements of the Sunyaev-Zel'dovich (SZ) effect in multiple frequency bands and use this method to characterize a sample of galaxy clusters detected in the South Pole Telescope (SPT) data. We use a Markov Chain Monte Carlo method to fit a β-model source profile and integrate YSZ within an angular aperture on the sky. In simulated observations of an SPT-like survey that include cosmic microwave background anisotropy, point sources, and atmospheric and instrumental noise at typical SPT-SZ survey levels, we show that we can accurately recover β-model parameters for inputted clusters. We measure YSZfor simulated semi-analytic clusters and find that YSZis most accurately determined in an angular aperture comparable to the SPT beam size. We demonstrate the utility of this method to measure YSZand to constrain mass scaling relations using X-ray mass estimates for a sample of 18 galaxy clusters from the SPT-SZ survey. Measuring YSZ within a 0.'75 radius aperture, we find an intrinsic log-normal scatter of 21%±11% in YSZat a fixed mass. Measuring YSZwithin a 0.3 Mpc projected radius (equivalent to 0.'75 at the survey median redshift z = 0.6), we find a scatter of 26%±9%. Prior to this study, the SPT observable found to have the lowest scatter with mass was cluster detection significance. We demonstrate, from both simulations and SPT observed clusters that YSZmeasured within an aperture comparable to the SPT beam size is equivalent, in terms of scatter with cluster mass, to SPT cluster detection significance.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - methods: data analysis - X-rays: galaxies: clusters

Status at CDS:  

Simbad objects: 19

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Number of rows : 19

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 SPT-CL J0000-5748 ClG 00 01 00 -57 48.5           ~ 38 0
2 LCS-CL J050921-5342.2 ClG 05 09 21.40 -53 42 12.3           ~ 44 0
3 SPT-CL J0511-5154 ClG 05 11 41.31 -51 54 20.8           ~ 15 0
4 SPT-CL J0521-5104 ClG 05 21 11.6 -51 04 52           ~ 15 0
5 SPT-CL J0528-5300 ClG 05 28 05.30 -52 59 52.8           ~ 38 0
6 SPT-CL J0533-5005 ClG 05 33 37 -50 05.8           ~ 25 0
7 1RXS J054010.1-574354 ClG 05 40 00.0 -57 44 36           ~ 13 0
8 1RXS J054638.7-534434 ClG 05 46 35.0 -53 46 04           ~ 65 0
9 SPT-CL J0551-5709 ClG 05 51 36.000 -57 09 22.00           ~ 29 0
10 SPT-CL J0559-5249 ClG 05 59 43.20 -52 49 27.1           ~ 40 0
11 ClG 0657-56 ClG 06 58 29.6 -55 56 39           ~ 791 1
12 SPT-CL J2301-5546 ClG 23 01 53 -55 46.6           ~ 12 0
13 SPT-CL J2331-5051 ClG 23 31 51 -50 51.9           ~ 36 0
14 [RRB2014] RM J233227.5-535828.0 ClG 23 32 26.70 -53 58 20.4           ~ 34 0
15 SPT-CL J2337-5942 ClG 23 37 24 -59 42.4           ~ 35 0
16 SPT-CL J2341-5119 ClG 23 41 12.3 -51 19 43           ~ 34 0
17 SPT-CL J2342-5411 ClG 23 42 45.80 -54 10 59.2           ~ 30 0
18 SPT-CL J2355-5056 ClG 23 55 49.000 -50 56 13.00           ~ 24 0
19 SPT-CL J2359-5009 ClG 23 59 44 -50 10.2           ~ 27 0

    Equat.    Gal    SGal    Ecl

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2020.05.25-02:03:00

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