The velocity dispersion function of early-type galaxies and its redshift evolution: the newest results from lens redshift test

no code implementations • 24 Feb 2021 • Shuaibo Geng, Shuo Cao, YuTing Liu, Tonghua Liu, Marek Biesiada, Yujie Lian

The redshift distribution of galactic-scale lensing systems provides a laboratory to probe the velocity dispersion function (VDF) of early-type galaxies (ETGs) and measure the evolution of early-type galaxies at redshift z ~ 1.

Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics

A model-independent constraint on the Hubble constant with gravitational waves from the Einstein Telescope

no code implementations • 9 Sep 2020 • Sixuan Zhang, Shuo Cao, Jia Zhang, Tonghua Liu, YuTing Liu, Shuaibo Geng, Yujie Lian

In this paper, we investigate the expected constraints on the Hubble constant from the gravitational-wave standard sirens, in a cosmological-model-independent way.

Cosmology and Nongalactic Astrophysics