204 citations · 582 across the 8 of their papers we have counts for
9 papers
New tools for studying planarity in galaxy satellite systems: Milky Way satellite planes are consistent with ΛCDM
E. Uzeirbegovic, G. Martin, S. Kaviraj +8
We introduce a new concept -- termed "planarity" -- which aims to quantify planar structure in galaxy satellite systems without recourse to the number or thickness of planes. We us…
Extreme-value modelling of the brightest galaxies at
Cameron Heather, Teeraparb Chantavat, Siri Chongchitnan +1
Data from the James Webb Space Telescope have revealed an intriguing population of bright galaxies at high redshifts. In this work, we use extreme-value statistics to calculate the…
The role of major mergers in the size growth of intermediate-mass spheroids
S. Kaviraj, M. Huertas-Company, S. Cohen +11
We study of the role of major mergers (mass ratios >1:4) in driving size growth in high-redshift (1<z<2) spheroidal galaxies (SGs) with stellar masses between 10^9.5 MSun and 10^10…
The insignificance of major mergers in driving star formation at z~2
S. Kaviraj, S. Cohen, R. A. Windhorst +7
We study the significance of major-merger-driven star formation in the early Universe, by quantifying the contribution of this process to the total star formation budget in 80 mass…
Newborn spheroids at high redshift: when and how did the dominant, old stars in today's massive galaxies form?
S. Kaviraj, S. Cohen, R. S. Ellis +10
We study ~330 massive (M* > 10^9.5 MSun), newborn spheroidal galaxies (SGs) around the epoch of peak star formation (1<z<3), to explore the high-redshift origin of SGs and gain ins…
A Panchromatic Catalog of Early-Type Galaxies at Intermediate Redshift in the Hubble Space Telescope Wide Field Camera 3 Early Release Science Field
M. J. Rutkowski, S. H. Cohen, S. Kaviraj +24
In the first of a series of forthcoming publications, we present a panchromatic catalog of 102 visually-selected early-type galaxies (ETGs) from observations in the Early Release S…
Galaxy Zoo: The properties of merging galaxies in the nearby Universe - local environments, colours, masses, star-formation rates and AGN activity
D. W. Darg, S. Kaviraj, C. J. Lintott +12
Following the study of Darg et al. (2009; hereafter D09a) we explore the environments, optical colours, stellar masses, star formation and AGN activity in a sample of 3003 pairs of…
Galaxy Zoo: the fraction of merging galaxies in the SDSS and their morphologies
D. W. Darg, S. Kaviraj, C. J. Lintott +13
We present the largest, most homogeneous catalogue of merging galaxies in the nearby universe obtained through the Galaxy Zoo project - an interface on the world-wide web enabling…
Probing the evolution of early-type cluster galaxies through chemical enrichment
I. Ferreras, J. Silk
A simple chemical enrichment model for cluster early-type galaxies is described in which the mechanisms considered in the evolutionary model are infall of primordial gas, outflows…