Mauskopf, P. D. and Ade, P. A. R. and Allen, S. W. and Church, S.E. and Edge, A. C. and Ganga, K. M. and Holzapfel, W. L. and Lange, A. E. and Rownd, B. K. and Philhour, B. J. and Runyan, M. C. (2000) 'A determination of the hubble constant using measurements of X-ray emission and the Sunyaev-Zeldovich effect at millimeter wavelengths in the Cluster Abell 1835.', Astrophysical journal., 538 (2). pp. 505-516.
We present a determination of the Hubble constant and central electron density in the cluster Abell 1835 (z = 0.2523) from measurements of X-ray emission and millimeter-wave observations of the Sunyaev-Zeldovich (S-Z) effect with the Sunyaev-Zeldovich Infrared Experiment (SuZIE) multifrequency array receiver. Abell 1835 is a well studied cluster in the X-ray with a large central cooling flow. Using a combination of data from ROSAT PSPC and HRI images and millimeter wave measurements we fit a King model to the emission from the ionized gas around Abell 1835 with θ0 = 022 ± 002 and β = 0.58 ± 0.02. Assuming the cluster gas to be isothermal with a temperature of 9.8 keV, we find a y-parameter of 4.9 ± 0.6 × 10-4 and a peculiar velocity of 500 ± 1000 km s-1 from measurements at three frequencies, 145, 221, and 279 GHz. Combining the S-Z measurements with X-ray data, we determine a value for the Hubble constant of H0 = 59 km s-1 Mpc-1 and a central electron density for Abell 1835 of ne0 = 5.64 × 10-2 cm-3 assuming a standard cosmology with Ωm = 1 and ΩΛ = 0. The error in the determination of the Hubble constant is dominated by the uncertainty in the temperature of the X-ray emitting cluster gas.
|Keywords:||Cosmology, Observations, Distance scale, Galaxies, Clusters, Individual (A1835), Radio continum, X-rays.|
|Full text:||(VoR) Version of Record|
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|Publisher Web site:||http://dx.doi.org/10.1086/309137|
|Publisher statement:||© 2000. The American Astronomical Society. All rights reserved. Printed in the U.S.A.|
|Date accepted:||No date available|
|Date deposited:||03 January 2014|
|Date of first online publication:||August 2000|
|Date first made open access:||No date available|
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