Density and Velocity Fields from the PSCz Survey

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dc.creatorSaunders, Will
dc.creatorBranchini, Enzo
dc.creatorTeodoro, Luis
dc.creatorHeavens, Alan
dc.creatorTaylor, Andy
dc.creatorValentine, Helen
dc.creatorD'Mellow, Kenton
dc.creatorOliver, Seb
dc.creatorKeeble, Oliver
dc.creatorRowan-Robinson, Michael
dc.creatorSharpe, Jacob
dc.creatorMaddox, Steve
dc.creatorMcMahon, Richard
dc.creatorEfstathiou, George
dc.creatorSutherland, Will
dc.creatorTadros, Helen
dc.creatorBallinger, Bill
dc.creatorSchmolt, Inga
dc.creatorFrenk, Carlos
dc.creatorWhite, Simon
dc.date1999-09-10
dc.date.accessioned2026-07-07T02:33:13Z
dc.date.available2026-07-07T02:33:13Z
dc.descriptionWe present the results for the predicted density and peculiar velocity fields and the dipole from the PSCz survey of 15,000 IRAS galaxies over 84% of the sky. We find a significant component to the dipole arising between 6000 and 15,000 km/s, but no significant component from greater distances. The misalignment with the CMB is 20 degrees. The most remarkable feature of the PSCz model velocity field is a coherent large-scale flow along the baseline connecting Perseus-Pisces, the Local Supercluster, Great Attractor and the Shapley Concentration. We have measured the parameter beta using the amplitude of the dipole, bulk flow and point by point comparisons between the individual velocities of galaxies in the MarkIII and SFI datasets, and the large-scale clustering distortion in redshift space.All our results are consistent with beta = 0.6 +- 0.1.
dc.description8 pages, 8 figures. To appear in 'Towards an Understanding of Cosmic Flows', Victoria, July 1999, eds Courteau,S., Strauss,M., Willick,J. PASP
dc.identifierhttps://arxiv.org/abs/astro-ph/9909190
dc.identifierhttp://arxiv.org/abs/astro-ph/9909190
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/14754
dc.subjectAstrophysics
dc.titleDensity and Velocity Fields from the PSCz Survey
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