2003MNRAS.341..937S

Query : 2003MNRAS.341..937S

2003MNRAS.341..937S - Mon. Not. R. Astron. Soc., 341, 937-940 (2003/May-3)

A measurement of H0from Ryle Telescope, ASCA and ROSAT observations of Abell 773.

SAUNDERS R., KNEISSL R., GRAINGE K., GRAINGER W.F., JONES M.E., MAGGI A., DAS R., EDGE A.C., LASENBY A.N., POOLEY G.G., MIYOSHI S.J., TSURUTA T., YAMASHITA K., TAWARA Y., FURUZAWA A., HARADA A. and HATSUKADE I.

Abstract (from CDS):

We present new Ryle Telescope (RT) observations of the Sunyaev-Zel'dovich (SZ) decrement from the cluster Abell 773. The field contains a number of faint radio sources that required careful subtraction. We use ASCA observations to measure the gas temperature and a ROSAT HRI image to model the gas density distribution. Normalizing the gas distribution to fit the RT visibilities returns a value of H0of 77+19–15km/s/Mpc (1σ errors) for an Einstein-de Sitter universe, or 85+20–17km/s/Mpc for a flat model with ΩΛ= 0.7. The errors quoted include estimates of the effects of the principal errors: noise in the SZ measurement, gas temperature uncertainty and line-of-sight depth uncertainty.

Abstract Copyright: 2003 RAS

Journal keyword(s): galaxies: clusters: individual: A773 - cosmic microwave background - cosmology: observations - distance scale - X-rays: general

Nomenclature: Table 1, Fig.2: [SKG2003] JHHMMSS.ss+DDMMSS = [SKG2003] +xxx+yyy N=8.

Simbad objects: 13

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Number of rows : 13
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 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
2 6C 085940+470301 Bla 09 03 03.99010563 +46 51 04.1374172   19.90 19.44 18.7   ~ 285 1
3 [SKG2003] J091736.95+514316 X 09 17 36.9 +51 43 16           ~ 1 0
4 [SKG2003] J091742.22+514412 X 09 17 42.2 +51 44 12           ~ 1 0
5 [SKG2003] J091746.96+514508 X 09 17 47.0 +51 45 08           ~ 1 0
6 [SKG2003] J091748.14+514303 X 09 17 48.1 +51 43 03           ~ 1 0
7 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 308 0
8 [SKG2003] J091752.45+514057 X 09 17 52.5 +51 40 57           ~ 1 0
9 [SKG2003] J091754.28+514447 X 09 17 54.3 +51 44 47           ~ 1 0
10 [SKG2003] J091755.57+514341 X 09 17 55.6 +51 43 41           ~ 1 0
11 [SKG2003] J091759.12+514309 X 09 17 59.1 +51 43 09           ~ 1 0
12 ACO 1413 ClG 11 55 12.87 +23 23 46.9           ~ 456 0
13 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2

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