311 citations · 1.5k across the 37 of their papers we have counts for
15 papers · 1 filter
The Way to Quench: Galaxy evolution in Abell 2142
Cheng-Gong Qu, Heng Yu, Antonaldo Diaferio +2
We show how the star formation activity of galaxies is progressively inhibited from the outer region to the center of the massive cluster A2142. From an extended spectroscopic reds…
The Velocity Dispersion Function for Quiescent Galaxies in Nine Strong-Lensing Clusters
Jubee Sohn, Daniel G. Fabricant, Margaret J. Geller +2
We measure the central stellar velocity dispersion function for quiescent galaxies in a set of nine northern clusters in the redshift range and with strong lensin…
Unveiling the Hierarchical Structure of Open Star Clusters: the Perseus Double Cluster
Heng Yu, Zheng-Yi Shao, Antonaldo Diaferio +1
We introduce a new kinematic method to investigate the structure of open star clusters. We adopt a hierarchical clustering algorithm that uses the celestial coordinates and the pro…
Distribution of Phantom Dark Matter in Dwarf Spheroidals
Alistair O. Hodson, Antonaldo Diaferio, Luisa Ostorero
We derive the distribution of the phantom dark matter in the eight classical dwarf galaxies surrounding the Milky Way, under the assumption that modified Newtonian dynamics (MOND)…
Dynamics of DiskMass Survey galaxies in refracted gravity
Valentina Cesare, Antonaldo Diaferio, Titos Matsakos +1
We test if Refracted Gravity (RG) can describe the dynamics of disk galaxies without resorting to dark matter. RG is a classical theory of gravity where the standard Poisson equati…
Velocity Dispersions of Brightest Cluster Galaxies and Their Host Clusters
Jubee Sohn, Margaret J. Geller, Antonaldo Diaferio +1
We explore connections between brightest cluster galaxies (BCGs) and their host clusters. We first construct a HeCS-omnibus cluster sample including 227 galaxy clusters within $0.0…