A measurement of the cosmological mass density from clustering in the 2dF galaxy redshift survey
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Peacock, John A; Cole, Shaun; Norberg, P; Baugh, Carlton M; Bland-Hawthorn, Joss; Bridges, Terry; Cannon, Russell; Colless, Matthew; Collins, Chris; Couch, Warrick; Dalton, Gavin; Deeley, Kathryn; de Propris, Roberto; Driver, Simon P; Efstathiou, George; Ellis, Richard S; Frenk, Carlos S; Glazebrook, Karl; Jackson, Carole; Lahav, Ofer; Lewis, I J; Lumsden, Stuart; Maddox, Steve J; Percival, Will J; Peterson, Bruce; Price, Ian; Sutherland, Will; Taylor, Keith
Description
The large-scale structure in the distribution of galaxies is thought to arise from the gravitational instability of small fluctuations in the initial density field of the Universe. A key test of this hypothesis is that forming superclusters of galaxies should generate a systematic infall of other galaxies. This would be evident in the pattern of recessional velocities, causing an anisotropy in the inferred spatial clustering of galaxies. Here we report a precise measurement of this clustering,...[Show more]
dc.contributor.author | Peacock, John A | |
---|---|---|
dc.contributor.author | Cole, Shaun | |
dc.contributor.author | Norberg, P | |
dc.contributor.author | Baugh, Carlton M | |
dc.contributor.author | Bland-Hawthorn, Joss | |
dc.contributor.author | Bridges, Terry | |
dc.contributor.author | Cannon, Russell | |
dc.contributor.author | Colless, Matthew | |
dc.contributor.author | Collins, Chris | |
dc.contributor.author | Couch, Warrick | |
dc.contributor.author | Dalton, Gavin | |
dc.contributor.author | Deeley, Kathryn | |
dc.contributor.author | de Propris, Roberto | |
dc.contributor.author | Driver, Simon P | |
dc.contributor.author | Efstathiou, George | |
dc.contributor.author | Ellis, Richard S | |
dc.contributor.author | Frenk, Carlos S | |
dc.contributor.author | Glazebrook, Karl | |
dc.contributor.author | Jackson, Carole | |
dc.contributor.author | Lahav, Ofer | |
dc.contributor.author | Lewis, I J | |
dc.contributor.author | Lumsden, Stuart | |
dc.contributor.author | Maddox, Steve J | |
dc.contributor.author | Percival, Will J | |
dc.contributor.author | Peterson, Bruce | |
dc.contributor.author | Price, Ian | |
dc.contributor.author | Sutherland, Will | |
dc.contributor.author | Taylor, Keith | |
dc.date.accessioned | 2016-02-24T22:41:02Z | |
dc.identifier.issn | 0028-0836 | |
dc.identifier.uri | http://hdl.handle.net/1885/98540 | |
dc.description.abstract | The large-scale structure in the distribution of galaxies is thought to arise from the gravitational instability of small fluctuations in the initial density field of the Universe. A key test of this hypothesis is that forming superclusters of galaxies should generate a systematic infall of other galaxies. This would be evident in the pattern of recessional velocities, causing an anisotropy in the inferred spatial clustering of galaxies. Here we report a precise measurement of this clustering, using the redshifts of more than 141,000 galaxies from the two-degree-field (2dF) galaxy redshift survey. We determine the parameter β = Ω0.6/b = 0.43 ± 0.07, where Ω is the total mass-density parameter of the Universe and b is a measure of the 'bias' of the luminous galaxies in the survey. (Bias is the difference between the clustering of visible galaxies and of the total mass, most of which is dark.) Combined with the anisotropy of the cosmic microwave background, our results favor a low-density Universe with Ω ≈ 0.3. | |
dc.publisher | Macmillan Publishers Ltd | |
dc.source | Nature | |
dc.subject | Keywords: anisotropy; article; calculation; cosmic radiation; cosmos; density; gravity; mass; microwave radiation; priority journal | |
dc.title | A measurement of the cosmological mass density from clustering in the 2dF galaxy redshift survey | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 410 | |
dc.date.issued | 2001 | |
local.identifier.absfor | 020100 - ASTRONOMICAL AND SPACE SCIENCES | |
local.identifier.absfor | 020110 - Stellar Astronomy and Planetary Systems | |
local.identifier.absfor | 091299 - Materials Engineering not elsewhere classified | |
local.identifier.ariespublication | U3488905xPUB5781 | |
local.type.status | Published Version | |
local.contributor.affiliation | Peacock, John A, University of Edinburgh | |
local.contributor.affiliation | Cole, Shaun, University of Durham | |
local.contributor.affiliation | Norberg, P, Durham University | |
local.contributor.affiliation | Baugh, Carlton M, University of Durham | |
local.contributor.affiliation | Bland-Hawthorn, Joss, Anglo-Australian Observatory | |
local.contributor.affiliation | Bridges, Terry, Anglo-Australian Observatory | |
local.contributor.affiliation | Cannon, Russell, Anglo-Australian Observatory | |
local.contributor.affiliation | Colless, Matthew, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Collins, Chris, Liverpool John Moores University | |
local.contributor.affiliation | Couch, Warrick, University of New South Wales | |
local.contributor.affiliation | Dalton, Gavin, University of Oxford | |
local.contributor.affiliation | Deeley, Kathryn, University of New South Wales | |
local.contributor.affiliation | de Propris, Roberto, University of New South Wales | |
local.contributor.affiliation | Driver, Simon P, University of St Andrews | |
local.contributor.affiliation | Efstathiou, George, University of Cambridge | |
local.contributor.affiliation | Ellis, Richard S, California Institute of Technology | |
local.contributor.affiliation | Frenk, Carlos S, University of Durham | |
local.contributor.affiliation | Glazebrook, Karl, Johns Hopkins University | |
local.contributor.affiliation | Jackson, Carole, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Lahav, Ofer, University of Cambridge | |
local.contributor.affiliation | Lewis, I J, Anglo-Australian Observatory | |
local.contributor.affiliation | Lumsden, Stuart, University of Leeds | |
local.contributor.affiliation | Maddox, Steve J, University of Nottingham | |
local.contributor.affiliation | Percival, Will J, University of Edinburgh | |
local.contributor.affiliation | Peterson, Bruce, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Price, Ian, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Sutherland, Will, University of Edinburgh | |
local.contributor.affiliation | Taylor, Keith, Anglo-Australian Observatory | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.issue | 6825 | |
local.bibliographicCitation.startpage | 169 | |
local.bibliographicCitation.lastpage | 173 | |
local.identifier.doi | 10.1038/35065528 | |
dc.date.updated | 2016-02-24T10:08:48Z | |
local.identifier.scopusID | 2-s2.0-0035826144 | |
Collections | ANU Research Publications |
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