Evidence for a low-density Universe from the relative velocities of galaxies
The motions of galaxies can be used to constrain the cosmological density parameter Omega and the clustering amplitude of matter on large scales. The mean relative velocity of galaxy pairs, estimated from the Mark III survey, indicates that Omega = 0.35 +0.35/-0.25. If the clustering of galaxies is...
| Main Authors: | , , , , |
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| Format: | Journal article |
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2000
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| _version_ | 1797077725261856768 |
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| author | Juszkiewicz, R Ferreira, P Feldman, H Jaffe, A Davis, M |
| author_facet | Juszkiewicz, R Ferreira, P Feldman, H Jaffe, A Davis, M |
| author_sort | Juszkiewicz, R |
| collection | OXFORD |
| description | The motions of galaxies can be used to constrain the cosmological density parameter Omega and the clustering amplitude of matter on large scales. The mean relative velocity of galaxy pairs, estimated from the Mark III survey, indicates that Omega = 0.35 +0.35/-0.25. If the clustering of galaxies is unbiased on large scales, Omega = 0.35 +/- 0.15, so that an unbiased Einstein-de Sitter model (Omega = 1) is inconsistent with the data. |
| first_indexed | 2024-03-07T00:22:05Z |
| format | Journal article |
| id | oxford-uuid:7ce78d3d-f5e2-4d3b-9195-e4f000fcecac |
| institution | University of Oxford |
| last_indexed | 2024-03-07T00:22:05Z |
| publishDate | 2000 |
| record_format | dspace |
| spelling | oxford-uuid:7ce78d3d-f5e2-4d3b-9195-e4f000fcecac2022-03-26T20:59:57ZEvidence for a low-density Universe from the relative velocities of galaxiesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7ce78d3d-f5e2-4d3b-9195-e4f000fcecacSymplectic Elements at Oxford2000Juszkiewicz, RFerreira, PFeldman, HJaffe, ADavis, MThe motions of galaxies can be used to constrain the cosmological density parameter Omega and the clustering amplitude of matter on large scales. The mean relative velocity of galaxy pairs, estimated from the Mark III survey, indicates that Omega = 0.35 +0.35/-0.25. If the clustering of galaxies is unbiased on large scales, Omega = 0.35 +/- 0.15, so that an unbiased Einstein-de Sitter model (Omega = 1) is inconsistent with the data. |
| spellingShingle | Juszkiewicz, R Ferreira, P Feldman, H Jaffe, A Davis, M Evidence for a low-density Universe from the relative velocities of galaxies |
| title | Evidence for a low-density Universe from the relative velocities of
galaxies |
| title_full | Evidence for a low-density Universe from the relative velocities of
galaxies |
| title_fullStr | Evidence for a low-density Universe from the relative velocities of
galaxies |
| title_full_unstemmed | Evidence for a low-density Universe from the relative velocities of
galaxies |
| title_short | Evidence for a low-density Universe from the relative velocities of
galaxies |
| title_sort | evidence for a low density universe from the relative velocities of galaxies |
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