Four new observational H(z) data from luminous red galaxies in the Sloan Digital Sky Survey data release seven

By Cong Zhang, Han Zhang, S. Yuan, Siqi Liu, Tong-Jie Zhang, Yanchun Sun. 2012

770 citations recorded by the source corpus.

By adopting the differential age method, we select 17 832 luminous red galaxies from the Sloan Digital Sky Survey Data Release Seven covering redshift 0 < z < 0.4 to measure the Hubble parameter. Using the full spectrum fitting package UlySS, these spectra are reduced with single stellar population models and optimal age information from our selected sample is derived. With the decreasing age-redshift relation, four new observational H(z) data (OHD) points are obtained, which are H(z) = 69.0 ± 19.6 km s−1 Mpc−1 at z = 0.07, H(z) = 68.6 ± 26.2km s−1 Mpc−1 at z = 0.12, H(z) = 72.9 ± 29.6 km s−1 Mpc−1 at z = 0.2 and H(z)=88.8 ± 36.6 km s−1 Mpc−1 at z = 0.28, respectively. Combined with 21 other available OHD data points, the performance of the constraint on both flat and non-flat ΛCDM models is presented.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/33ac7ca694563dd51fb6f6cc407128dff8cd2f34

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In Astronomy and Astrophysics

1. Michele Moresco
2. A. Cimatti
3. L. Verde
4. L. Pozzetti
5. Raul Jimenez
6. C. Conroy
7. Bharat Ratra
8. N. Borghi

Citations in the corpus

• Toward a Better Understanding of Cosmic Chronometers: A New Measurement of H(z) at z ∼ 0.7 (2021, methodology): “The other available measurements are made analyzing the ages of luminous red galaxies with the full spectral fitting technique (using, in particular, the Ulyss code; Zhang et al. 2014; Ratsimbazafy et al. 2017).”
• A 6% measurement of the Hubble parameter at z∼0.45: direct evidence of the epoch of cosmic re-acceleration (2016, methodology): “ed and accelerated expansion is assumed, and compare the results. The BOSS data 1seehttp://wiki.cosmos.esa.int/planckpla2015/index.php/Cosmological Parameters. – 15 – z H(z) σH(z) ref. 0.07 69.0 19.6 [67] 0.09 69 12 [12] 0.12 68.6 26.2 [67] 0.17 83 8 [12] 0.179 75 4 [11] 0.199 75 5 [11] 0.20 72.9 29”
• Possible signals of vacuum dynamics in the Universe (2017, methodology): “…al. 2017; Delubac et al. 2015; Aubourg et al. 2015), the values of the Hubble parameter extracted from cosmic chronometers at various redshifts, H(zi) (Zhang et al. 2014, Jiménez et al. 2003; Simon, Verde & Jiménez 2005; Moresco et al. 2012, 2016; Stern et al. 2010; Moresco 2015), the CMB data…”
• HUBBLE PARAMETER MEASUREMENT CONSTRAINTS ON THE REDSHIFT OF THE DECELERATION–ACCELERATION TRANSITION, DYNAMICAL DARK ENERGY, AND SPACE CURVATURE (2016, neutral): “…COMPILATION In Table 1 we collect 38 Hubble parameter H(z) measurements from Simon et al. (2005), Stern et al. (2010), Moresco et al. (2012), Blake et al. (2012), Zhang et al. (2012), Font-Ribera et al. (2014), Delubac et al. (2015), Moresco (2015), Moresco et al. (2016), and Alam et al. (2016).”
• HUBBLE PARAMETER MEASUREMENT CONSTRAINTS ON THE COSMOLOGICAL DECELERATION–ACCELERATION TRANSITION REDSHIFT (2013, background): “5 Simon et al. (2005), Stern et al. (2010), Moresco et al. (2012), and Zhang et al. (2012) estimate H (z) from measurements of differential ages of passively evolving galaxies.”