no code implementations • 3 Nov 2020 • Shengdong Lu, Dandan Xu, Yunchong Wang, Yanmei Chen, Ling Zhu, Shude Mao, Volker Springel, Jing Wang, Mark Vogelsberger, Lars Hernquist
A key feature of a large population of low-mass, late-type disk galaxies are star-forming disks with exponential light distributions.
Astrophysics of Galaxies
1 code implementation • 4 Jan 2018 • Xuheng Ding, Tommaso Treu, Anowar J. Shajib, Dandan Xu, Geoff C. -F. Chen, Anupreeta More, Giulia Despali, Matteo Frigo, Christopher D. Fassnacht, Daniel Gilman, Stefan Hilbert, Philip J. Marshall, Dominique Sluse, Simona Vegetti
The goal of the challenge is to infer $H_0$ for each rung, given the HST images, the time delay, and a stellar velocity dispersion of the deflector, for a fixed background cosmology.
Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies
no code implementations • 6 May 2014 • Mark Vogelsberger, Shy Genel, Volker Springel, Paul Torrey, Debora Sijacki, Dandan Xu, Gregory F. Snyder, Simeon Bird, Dylan Nelson, Lars Hernquist
Previous simulations of the growth of cosmic structures have broadly reproduced the 'cosmic web' of galaxies that we see in the Universe, but failed to create a mixed population of elliptical and spiral galaxies due to numerical inaccuracies and incomplete physical models.
Cosmology and Nongalactic Astrophysics
