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A 2.4% DETERMINATION of the LOCAL VALUE of the HUBBLE CONSTANT

Tucker , Bradley; Casertano, Stefano; Reid, M; Challis, Peter M

Description

We use the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST) to reduce the uncertainty in the local value of the Hubble constant from 3.3% to 2.4%. The bulk of this improvement comes from new near-infrared (NIR) observations of Cepheid variables in 11 host galaxies of recent type Ia supernovae (SNe Ia), more than doubling the sample of reliable SNe Ia having a Cepheid-calibrated distance to a total of 19; these in turn leverage the magnitude-redshift relation based on 300 SNe Ia at...[Show more]

CollectionsANU Research Publications
Date published: 2016
Type: Journal article
URI: http://hdl.handle.net/1885/152220
Source: The Astrophysical Journal
DOI: 10.3847/0004-637X/826/1/56
Access Rights: Open Access

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