A Sparse-Sampled Redshift Survey of IRAS Galaxies - Part One - the Convergence of the IRAS Dipole and the Origin of Our Motion with Respect to the Microwave Background

M. Rowan-Robinson, A. Lawrence, W. Saunders, J. Crawford, R. Ellis, C. S. Frenk, I. Parry, X. Xiaoyang, J. Allington-Smith, G. Efstathiou, N. Kaiser

Research output: Contribution to journalArticlepeer-review

Abstract

We have carried out a sparse-sampled redshift survey of IRAS Point Source Catalog 60-micron sources, at a sampling rate of one in six. For a sample of 2163 sources with S>=0.6 Jy at |b|>10^deg^, we have redshifts for 2093, or 97 per cent. Of the sources, which were selected from the IRAS 60-micron Galaxy Catalogue of Rowan-Robinson et al., 1.2 per cent turned out to be galactic and 0.4 per cent are blank fields. Our survey reaches significantly deeper than the all-sky IRAS galaxy redshift survey of Strauss & Davis, which is complete to 1.94 Jy. We have used these data to investigate the convergence of the IRAS dipole. We find that the peculiar acceleration acting on the Local Group, as measured with IRAS galaxies, is generated within 100h^-1^ Mpc. For d
Original languageEnglish
Pages (from-to)1
JournalMonthly Notices of the Royal Astronomical Society
Volume247
Publication statusPublished - 1 Nov 1990

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