Improved constraints on the expansion rate of the Universe up to z ∼ 1.1 from the spectroscopic evolution of cosmic chronometers

Moresco, M.; Cimatti, A.; Jimenez, R.; Pozzetti, L.; Zamorani, G.; Bolzonella, M.; Dunlop, J.; Lamareille, F.; Mignoli, M.; Pearce, H.; Rosati, P.; Stern, D.; Verde, L.; Zucca, E.; Carollo, C.M.; Contini, T.; Kneib, J.-P.; Le Fèvre, O.; Lilly, S.J.; Mainieri, V.; Renzini, A.; Scodeggio, M.; Balestra, I.; Gobat, R.; McLure, R.; Bardelli, S.; Bongiorno, A.; Caputi, K.; Cucciati, O.; de la Torre, S.; de Ravel, L.; Franzetti, P.; Garilli, B.; Iovino, A.; Kampczyk, P.; Knobel, C.; Kovač, K.; Le Borgne, J.-F.; Le Brun, V.; Maier, C.; Pelló, R.; Peng, Y.; Perez-Montero, E.; Presotto, V.; Silverman, J.D.; Tanaka, M.; Tasca, L.A.M.; Tresse, L.; Vergani, D.; Almaini, O.; Barnes, L.; Bordoloi, R.; Bradshaw, E.; Cappi, A.; Chuter, R.; Cirasuolo, M.; Coppa, G.; Diener, C.; Foucaud, S.; Hartley, W.; Kamionkowski, M.; Koekemoer, A.M.; López-Sanjuan, C.; McCracken, H.J.; Nair, P.; Oesch, P.; Stanford, A.; Welikala, N.

doi:10.1088/1475-7516/2012/08/006

Public

Improved constraints on the expansion rate of the Universe up to z ∼ 1.1 from the spectroscopic evolution of cosmic chronometers

Published in Journal of Cosmology and Astroparticle Physics • Aug 1, 2012

Authors:

M. Moresco

A. Cimatti

R. Jimenez

Abstract

We present new improved constraints on the Hubble parameter H ( z ) in the redshift range 0.15 < z < 1.1, obtained from the differential spectroscopic evolution of early-type galaxies as a function of redshift. We extract a large sample of early-type galaxies ( ∼ 11000) from several spectroscopic su...

Subject

Physics

Redshift

Astrophysics

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