Determining the systemic redshift of Lyman-α emitters with neural networks and improving the measured large-scale clustering

no code implementations • 26 May 2020 • Siddhartha Gurung-López, Shun Saito, Carlton M. Baugh, Silvia Bonoli, Cedric G. Lacey, Álvaro A. Orsi

We explore how to mitigate the clustering distortions in Lyman-$\alpha$ emitters (LAEs) samples caused by the miss-identification of the Lyman-$\alpha$ (Ly$\alpha$) wavelength in their Ly$\alpha$ line profiles.

Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics

The Effect of Thermal Velocities on Structure Formation in N-body Simulations of Warm Dark Matter

no code implementations • 23 Jun 2017 • Matteo Leo, Carlton M. Baugh, Baojiu Li, Silvia Pascoli

We investigate the impact of thermal velocities in N-body simulations of structure formation in warm dark matter models.

Cosmology and Nongalactic Astrophysics

Theoretical Models of the Halo Occupation Distribution: Separating Central and Satellite Galaxies

no code implementations • 30 Aug 2004 • Zheng Zheng, Andreas A. Berlind, David H. Weinberg, Andrew J. Benson, Carlton M. Baugh, Shaun Cole, Romeel Dave, Carlos S. Frenk, Neal Katz, Cedric G. Lacey

In agreement with earlier results for dark matter subhalos, we find that the mean occupation function <N> for galaxies above a baryonic mass threshold can be approximated by a step function for central galaxies plus a power law for satellites, and that the distribution of satellite numbers is close to Poisson at fixed halo mass.

astro-ph