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Galaxy Cluster Mass Reconstruction Project: I. Methods and first results on galaxy-based techniques
L. Old, R. A. Skibba, F. R. Pearce +18
This paper is the first in a series in which we perform an extensive comparison of various galaxy-based cluster mass estimation techniques that utilise the positions, velocities an…
The Nature of Faint Fuzzies from the Kinematics of NGC1023
A. L. Chies-Santos, A. Cortesi, D. S. M. Fantin +3
Faint fuzzies are metal-rich apparently-old star clusters with unusually large radii (7-15 pc), found mostly in S0 galaxies, whose source remain obscure. To identify their origins,…
Clues to the Formation of Lenticular Galaxies Using Spectroscopic Bulge-Disk Decomposition
Evelyn J. Johnston, Alfonso Aragon-Salamanca, Michael R. Merrifield +1
Lenticular galaxies have long been thought of as evolved spirals, but the processes involved to quench the star formation are still unclear. By studying the individual star formati…
Disentangling the stellar populations in the counter-rotating disc galaxy NGC 4550
Evelyn J. Johnston, Michael R. Merrifield, Alfonso Aragon-Salamanca +1
In order to try and understand its origins, we present high-quality long-slit spectral observations of the counter-rotating stellar discs in the strange S0 galaxy NGC 4550. We kine…
Radially Extended Kinematics in the S0 Galaxy NGC 2768 from Planetary Nebulae, Globular Clusters and Starlight
Duncan A. Forbes, Arianna Cortesi, Vincenzo Pota +7
There are only a few tracers available to probe the kinematics of individual early-type galaxies beyond one effective radius. Here we directly compare a sample of planetary nebulae…
The Structures of Distant Galaxies V: The Evolution of Galaxy Structure in Stellar Mass at z < 1
Michelle Lanyon-Foster, Christopher J. Conselice, Michael R. Merrifield
Galaxy structure and morphology is nearly always studied using the light originating from stars, however ideally one is interested in measuring structure using the stellar mass dis…
Dwarfs Gobbling Dwarfs: A Stellar Tidal Stream Around NGC 4449 and Hierarchical Galaxy Formation on Small Scales
David Martinez-Delgado, Aaron J. Romanowsky, R. Jay GaBany +13
A candidate diffuse stellar substructure was previously reported in the halo of the nearby dwarf starburst galaxy NGC 4449 by Karachentsev et al. We map and analyze this feature us…
The PN.S Elliptical Galaxy Survey: a standard LCDM halo around NGC 4374?
N. R. Napolitano, A. J. Romanowsky, M. Capaccioli +10
As part of our current programme to test LCDM predictions for dark matter (DM) haloes using extended kinematical observations of early-type galaxies, we present a dynamical analysi…
The Stellar Phase Density of the Local Universe and its Implications for Galaxy Evolution
Michael R. Merrifield
This paper introduces the idea that the general mixing inequality obeyed by evolving stellar phase densities may place useful constraints on the possible history of the over-all ga…
Studying the Kinematics of Faint Stellar Populations with the Planetary Nebula Spectrograph
Michael R. Merrifield, the PN. S Consortium
Galaxies are faint enough when one observes just their light distributions, but in studying their full dynamical structure the stars are spread over the six dimensions of phase spa…