60 citations · 244 across the 10 of their papers we have counts for
10 papers
One Stream or Two -- Exploring Andromeda's North West Stream
Janet Preston, Denis Erkal, Michelle L. M. Collins +3
We present results of our dynamical stream modelling for the North West Stream in the outer halo of the Andromeda galaxy (M31). Comprising two main segments, the North West Stream…
EDGE: The shape of dark matter haloes in the faintest galaxies
Matthew D. A. Orkney, Ethan Taylor, Justin I. Read +5
Collisionless Dark Matter Only (DMO) structure formation simulations predict that Dark Matter (DM) haloes are prolate in their centres and triaxial towards their outskirts. The add…
EDGE: the puzzling ellipticity of Eridanus II's star cluster and its implications for dark matter at the heart of an ultra-faint dwarf
Matthew D. A. Orkney, Justin I. Read, Oscar Agertz +6
The Eridanus II (EriII) 'ultra-faint' dwarf has a large () and low mass () star cluster (SC) offset from its centre by $23\pm3\,\text{…
EDGE: Two routes to dark matter core formation in ultra-faint dwarfs
Matthew D. A. Orkney, Justin I. Read, Martin P. Rey +6
In the standard Lambda cold dark matter paradigm, pure dark matter simulations predict dwarf galaxies should inhabit dark matter haloes with a centrally diverging density `cusp'. T…
Formation of the largest galactic cores through binary scouring and gravitational wave recoil
Imran Nasim, Alessia Gualandris, Justin I. Read +3
Massive elliptical galaxies are typically observed to have central cores in their projected radial light profiles. Such cores have long been thought to form through `binary scourin…
Defeating stochasticity: coalescence timescales of massive black holes in galaxy mergers
Imran Nasim, Alessia Gualandris, Justin Read +3
The coalescence of massive black hole binaries (BHBs) in galactic mergers is the primary source of gravitational waves (GWs) at low frequencies. Current estimates of GW detection r…
Uncovering the Orbit of the Hercules Dwarf Galaxy
Alexandra L. Gregory, Michelle L. M. Collins, Denis Erkal +6
We present new chemo--kinematics of the Hercules dwarf galaxy based on Keck II-- DEIMOS spectroscopy. Our 21 confirmed members have a systemic velocity of $v_{\mathrm{Herc}}=46.4\p…
A Dwarf Disrupting -- Andromeda XXVII and the North West Stream
Janet Preston, Michelle L. M. Collins, Rodrigo A. Ibata +10
We present a kinematic and spectroscopic analysis of 38 red giant branch stars, in 7 fields, spanning the dwarf spheroidal galaxy Andromeda XXVII and the upper segment of the North…
Probing dark matter with star clusters: a dark matter core in the ultra-faint dwarf Eridanus II
Filippo Contenta, Eduardo Balbinot, James A. Petts +6
We present a new technique to probe the central dark matter (DM) density profile of galaxies that harnesses both the survival and observed properties of star clusters. As a first a…
An efficient positive potential-density pair expansion for modelling galaxies
Armando Rojas-Niño, Justin I. Read, Luis Aguilar +1
We present a novel positive potential-density pair expansion for modelling galaxies, based on the Miyamoto-Nagai (MN) disc. By using three sets of such discs, each one of them alig…