2001ApJ...555L..11M

Query : 2001ApJ...555L..11M

2001ApJ...555L..11M - Astrophys. J., 555, L11-L15 (2001/July-1)

A measurement of H₀ from the Sunyaev-Zeldovich effect.

MASON B.S., MYERS S.T. and READHEAD A.C.S.

Abstract (from CDS):

We present a determination of the Hubble constant, H₀, from measurements of the Sunyaev-Zeldovich effect in an orientation-unbiased sample of seven z<0.1 galaxy clusters. With improved X-ray models and a more accurate 32 GHz calibration, we obtain H₀=64⁺¹⁴_–11±14_sys km.s^–1.Mpc^–1 for a standard cold dark matter (CDM) cosmology, or H₀=66⁺¹⁴_–11±15_sys km.s^–1.Mpc^–1 for a flat ΛCDM cosmology. In combination with X-ray cluster measurements and the big bang nucleosynthesis value for Ω_B, we find Ω_M=0.32±0.05.

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Journal keyword(s): Cosmology: Cosmic Microwave Background - Cosmology: Observations - Cosmology: Dark Matter - Cosmology: Distance Scale - Galaxies: Clusters: Individual: Name: Abell 399 - galaxies: clusters: individual: Name: Abell 401 - galaxies: clusters: individual: Name: Abell 478 - galaxies: clusters: individual: Name: Abell 1651 - galaxies: clusters: individual: Name: Abell 2142 - galaxies: clusters: individual: Name: Abell 2256 - galaxies: clusters: individual: Name: Coma Cluster

Simbad objects: 8

Full paper

View the references in ADS

Number of rows : 8

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag V	Sp type	#ref 1850 - 2026	#notes
1	ACO 399	ClG	02 57 56.4	+13 00 59		~	420	0
2	ACO 401	ClG	02 58 50.3	+13 34 07		~	592	0
3	ACO 478	ClG	04 13 24.8	+10 27 52		~	522	0
4	ACO 1651	ClG	12 59 27.3	-04 10 49		~	307	0
5	ACO 1656	ClG	12 59 44.40	+27 54 44.9		~	5141	2
6	ACO 2142	ClG	15 58 26.5	+27 13 52		~	825	0
7	ACO 2256	ClG	17 03 37.5	+78 37 23		~	928	1
8	NAME Cas A	SNR	23 23 26.0	+58 48 41	14.30	~	3033	1

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