Steps toward the Hubble constant. IX - The cosmic value of H(0) freed from all local velocity anomalies
| Autor: | G. A. Tammann, Allan Sandage |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Physics
Andromeda Galaxy Astrophysics::High Energy Astrophysical Phenomena Astrophysics::Instrumentation and Methods for Astrophysics Local Group Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Cosmological constant Virgo Cluster Galaxy Cosmology General Relativity and Quantum Cosmology symbols.namesake Space and Planetary Science symbols Astrophysics::Galaxy Astrophysics Galaxy cluster Hubble's law |
| Zdroj: | The Astrophysical Journal. 365:1 |
| ISSN: | 1538-4357 0004-637X |
| DOI: | 10.1086/169453 |
| Popis: | Three independent methods are used here to bring the remote velocity frame to the Virgo Cluster distance, allowing a determination of the velocity which the Virgo Cluster would have if it were freed from all local anomalies relative to the cosmological Machian frame. The resulting velocity of Virgo is 1144 + or - 18 km/s. The distance to the Virgo Cluster core is determined and combined with the cosmic Virgo velocity to obtain a Hubble constant of unprecedented accuracy, H(0) = 52 + or - 2 km/s/Mpc. The infall velocity of the Local Group toward Virgo is calculated to be 168 + or - 50 km/s. 144 refs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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