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The Hubble Constant

Mould, Jeremy

Description

With the completion of the Hubble Space Telescope (HST) Key Project on the Extragalactic Distance Scale, it is interesting to form the dimensionless quantity Hoto by multiplying the Hubble Constant by the age of the Universe. In a matter dominated decelerating Universe with a density exceeding 0 · 26 of the critical value, Hoto < 1; in an accelerating Universe with the same Ωm = 0 · 26, but dominated by vacuum energy with ΩV ≥ 1 - Ωm, Hoto ≥ 1. If the first globular clusters formed 109 years...[Show more]

dc.contributor.authorMould, Jeremy
dc.date.accessioned2015-12-13T23:18:12Z
dc.date.available2015-12-13T23:18:12Z
dc.identifier.issn1323-3580
dc.identifier.urihttp://hdl.handle.net/1885/90057
dc.description.abstractWith the completion of the Hubble Space Telescope (HST) Key Project on the Extragalactic Distance Scale, it is interesting to form the dimensionless quantity Hoto by multiplying the Hubble Constant by the age of the Universe. In a matter dominated decelerating Universe with a density exceeding 0 · 26 of the critical value, Hoto < 1; in an accelerating Universe with the same Ωm = 0 · 26, but dominated by vacuum energy with ΩV ≥ 1 - Ωm, Hoto ≥ 1. If the first globular clusters formed 109 years after the Big Bang, then with 95% confidence Hoto = 1 · 0 ± 0 · 3. The classical Einstein-de Sitter cosmological model has Hoto = 2/3.
dc.publisherCSLI Publications
dc.sourcePublications of the Astronomical Society of Australia
dc.subjectKeywords: Cosmology: distance scale; Galaxies: formation
dc.titleThe Hubble Constant
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume17
dc.date.issued2000
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationMigratedxPub20330
local.type.statusPublished Version
local.contributor.affiliationMould, Jeremy, College of Physical and Mathematical Sciences, ANU
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage45
local.bibliographicCitation.lastpage47
dc.date.updated2015-12-12T08:55:48Z
local.identifier.scopusID2-s2.0-0034419886
CollectionsANU Research Publications

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