The Accuracy of the Hubble Constant Measurement Verified through Cepheid Amplitudes

The accuracy of the Hubble constant measured with extragalactic Cepheids depends on robust photometry and background estimation in the presence of stellar crowding. The conventional approach accounts for crowding by sampling backgrounds near Cepheids and assuming that they match those at their posit...

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Veröffentlicht in:	Astrophysical journal. Letters 2020-06, Vol.896 (2), p.L43
Hauptverfasser:	Riess, Adam G., Yuan, Wenlong, Casertano, Stefano, Macri, Lucas M., Scolnic, Dan
Format:	Artikel
Sprache:	eng
Schlagworte:	Accuracy Amplitudes CCD photometry Cepheid distance Cepheid variable stars Cepheid variables Cosmology Distance indicators Hubble constant Hubble Space Telescope Light curve Light curves Magellanic clouds Milky Way Space telescopes Supernovae Systematic errors
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