6 papers
JWST Reveals a Candidate Jellyfish Galaxy at z=1.156
Ian D. Roberts, Michael L. Balogh, Visal Sok +3
We report the discovery of COSMOS2020-635829 as a candidate jellyfish galaxy undergoing ram pressure stripping in a (proto)cluster at . High-resolution imaging from the Jame…
The Velocity Field Olympics: Assessing velocity field reconstructions with direct distance tracers
Richard Stiskalek, Harry Desmond, Julien Devriendt +5
The peculiar velocity field of the local Universe provides direct insights into its matter distribution and the underlying theory of gravity, and is essential in cosmological analy…
Constraining cosmological parameters using density split lensing and the conditional stellar mass function
Pierre A. Burger, Darshak A. Patel, Michael J. Hudson
In this work, we develop a simulation-based model to predict the excess surface mass density (ESD) depending on the local density environment. Using a conditional stellar mass func…
Truncated star formation and ram pressure stripping in the Coma Cluster
Ariel O. Broderick, Ian D. Roberts, Michael J. Hudson
We use 45 galaxies from the Mapping Nearby Galaxies at Apache Point Observatory survey to study the physical drivers of star formation quenching in the Coma cluster. We measure spe…
Uncertainties in the Hubble Constant from Peculiar Velocities
Amber M. Hollinger, Michael J. Hudson
Recent measurements of the Hubble constant using type Ia supernovae explicitly correct for their estimated peculiar velocities using the 2M++ reconstruction of the local density fi…
Cosmological parameters from the joint analysis of Density Split and Second Order Statistics: an Emulator based on the Halo Occupation Distribution
Pierre A. Burger, Enrique Paillas, Michael J. Hudson
In this work, we develop a simulation-based model to predict the density split (DSS) and second-order shear and clustering statistics. A simulation-based model has the potential to…