New Observational $H(z)$ Data from Full-Spectrum Fitting of Cosmic Chronometers in the LEGA-C Survey

Abstract

In this work, we perform a full-spectrum fitting of 350 massive and passive galaxies selected as cosmic chronometers from the LEGA-C ESO public survey to derive their stellar ages, metallicities, and star-formation histories. We extensively test our results by assessing their dependence on the possible contribution of dust, calibration of noise and signal, and the use of photometric data in addition to spectral information; we as well identify indicators of the correct convergence of the results, including the shape of the posterior distributions, the analysis of specific spectral features, and the correct reproduction of the observed spectrum. We derive a clear age-redshift trend compatible with the aging in a standard cosmological model, showing a clear downsizing pattern, with more massive galaxies being formed at higher redshift ($z_f\sim 2.5$) with respect to lower massive ones ($z_f\sim 2$). From these data, we measure the differential aging of this population of cosmic chronometers to derive a new measurement of the Hubble parameter, obtaining $H(z=0.8)=113.1\pm 15.1(stat.{)}_{-11.3}^{+29.1}(syst.)\mathrm{km}{\mathrm{s}}^{-1}\mathrm{Mp}{\mathrm{c}}^{-1}$. This analysis allows us for the first time to compare the differential ages of cosmic chronometers measured on the same sample with two completely different methods, the full-spectrum fit (this work) and the analysis of Lick indices, known to correlate with the age and metallicity of the stellar populations \citep{Borghi2022a}. Albeit an understood offset in the absolute ages, the differential ages have proven to be extremely compatible between the two methods, despite the very different data, assumptions, and models considered, demonstrating the robustness of the method.

21 pages, 1 table, 9 figures, published in ApJS. A new OHD supplement to 32 released data (including 4 OHD by Zhang et al. 2014. RAA, 14, 1221) is now available for cosmological model-independent studies

References in corpus (19)

• Array Programming with NumPy
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• In the Realm of the Hubble tension $-$ a Review of Solutions
• A gravitational-wave standard siren measurement of the Hubble constant
• Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z$\sim$2
• Detection of quiescent galaxies in a bicolor sequence from z=0-2
• COSMOS2020: A panchromatic view of the Universe to $z\sim 10$ from two complementary catalogs
• The Expansion of the Universe is Faster than Expected
• SNLS3: Constraints on Dark Energy Combining the Supernova Legacy Survey Three Year Data with Other Probes
• Toward a Better Understanding of Cosmic Chronometers: A new measurement of H(z) at z~0.7
• Charting the evolution of the ages and metallicities of massive galaxies since z=0.7
• The evolution of star formation histories of quiescent galaxies
• Fast, Slow, Early, Late: Quenching Massive Galaxies at z~0.8
• Power of Observational Hubble Parameter Data: a Figure of Merit Exploration
• Rejuvenation in $z\sim 0.8$ quiescent galaxies in LEGA-C
• Toward a Better Understanding of Cosmic Chronometers: Stellar Population Properties of Passive Galaxies at Intermediate Redshift
• A New Method to Measure Hubble Parameter $H(z)$ using Fast Radio Bursts
• Elemental Abundances and Ages of $z\sim 0.7$ Quiescent Galaxies on the Mass-Size Plane: Implication for Chemical Enrichment and Star-Formation Quenching
• The stellar metallicities of massive quiescent galaxies at 1.0 < z < 1.3 from KMOS+VANDELS

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