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

• Published in: The Astrophysical journal. Supplement series Vol. 265; no. 2; pp. 48 - 63
• Main Authors: Jiao, Kang, Borghi, Nicola, Moresco, Michele, Zhang, Tong-Jie
• Format: Journal Article
• Language: English
• Published: Saskatoon The American Astronomical Society 01.04.2023; IOP Publishing
• Subjects: Aging; Astronomical models; Chronometers; Cosmological evolution; Cosmology; Downsizing; Galaxies; Galaxy ages; Measuring instruments; Metallicity; Observational cosmology; Red shift; Star & galaxy formation; Star formation; Stellar age; Stellar populations

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 possi...