Cultural advice

The Australian National University acknowledges, celebrates and pays our respects to the Ngunnawal and Ngambri people of the Canberra region and to all First Nations Australians on whose traditional lands we meet and work, and whose cultures are among the oldest continuing cultures in human history.

Aboriginal and Torres Strait Islander peoples are advised that ANU Library collections may include images, names, voices, and other representations of deceased persons.

Material in the collection may contain terms, language or views that reflect the period in which the item was created and may be considered inappropriate today.

The Hubble Constant

Thumbnail Image

Date

2000

Authors

Mould, Jeremy

Journal Title

Journal ISSN

Volume Title

Publisher

CSLI Publications

Abstract

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 after the Big Bang, then with 95% confidence Hoto = 1 · 0 ± 0 · 3. The classical Einstein-de Sitter cosmological model has Hoto = 2/3.

Description

Keywords

Keywords: Cosmology: distance scale; Galaxies: formation

Citation

URI

http://hdl.handle.net/1885/90057

Collections

ANU Research Publications

Source

Publications of the Astronomical Society of Australia

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

Restricted until

DSpace software copyright © 2002-2026 LYRASIS