Galaxy structure from multiple tracers - II. M87 from parsec to megaparsec scales

  title={Galaxy structure from multiple tracers - II. M87 from parsec to megaparsec scales},
  author={Lindsay J Oldham and Matthew W. Auger},
  journal={Monthly Notices of the Royal Astronomical Society},
  • L. OldhamM. Auger
  • Published 6 January 2016
  • Physics
  • Monthly Notices of the Royal Astronomical Society
Following a number of discrepant studies of M87’s mass prole, we carry out an extensive dynamical analysis of multiple tracer populations in this giant elliptical galaxy in order to constrain its mass over a large radius range. We combine stellar kinematics in the central regions with the dynamics of 612 globular clusters out to 200 kpc and satellite Virgo galaxies on scales comparable with the virial radius of the cluster. Using a spherically symmetric Jeans analysis, we are able to… 

Galaxy structure from multiple tracers - III. Radial variations in M87's IMF

We present the first constraints on stellar mass-to-light ratio gradients in an early-type galaxy (ETG) using multiple dynamical tracer populations to model the dark and luminous mass structure

The SLUGGS Survey: The Inner Dark Matter Density Slope of the Massive Elliptical Galaxy NGC 1407

We investigate the dark matter density profile of the massive elliptical galaxy, NGC 1407, by constructing spherically symmetric Jeans models of its field star and globular cluster systems. Two major

Galactic Dark Matter Halos and Globular Cluster Populations. III. Extension to Extreme Environments

The total mass in the globular cluster (GC) system of a galaxy is empirically a near-constant fraction of the total mass of the galaxy across a range of 105 in galaxy mass. This trend is radically

Revisiting the Bulge–Halo Conspiracy. I. Dependence on Galaxy Properties and Halo Mass

We carry out a systematic investigation of the total mass density profile of massive ( log M star / M ⊙ ≳ 11.3 ) early-type galaxies and its dependence on galactic properties and host halo mass with

The Assembly History of M87 through Radial Variations in Chemical Abundances of Its Field Star and Globular Cluster Populations

We present an extensive study of spectroscopically derived chemical abundances for M87 and its globular cluster (GC) system. Using observations from the Mitchell spectrograph at McDonald, LRIS at

The SLUGGS survey: the mass distribution in early-type galaxies within five effective radii and beyond

We study mass distributions within and beyond 5 effective radii (Re) in 23 early-type galaxies from the SAGES Legacy Unifying Globulars and Galaxies Survey, using their globular cluster (GC)

Sizes of the stellar subsystems of galaxies and intracluster stars in the Virgo cluster

Stellar photometry for three fields in the Virgo cluster of galaxies has been performed on the basis of archival Hubble Space Telescope ACS/WFC images. The densely populated red giant branches

Is there substructure around M87

We present a general method to identify infalling substructure in discrete datasets with position and line-of-sight velocity data. We exploit the fact that galaxies falling onto a brightest cluster

The Fundamental Plane of evolving red nuggets

We present an exploration of the mass structure of a sample of 12 strongly lensed massive, compact early-type galaxies at redshifts z ∼ 0.6 to provide further possible evidence for their inside-out

The most massive galaxies in clusters are already fully grown at z ∼ 0.5

By constructing scaling relations for galaxies in the massive cluster MACSJ0717.5 at z = 0.545 and comparing with those of Coma, we model the luminosity evolution of the stellar populations and the



Galaxy structure from multiple tracers – I. A census of M87's globular cluster populations

We present a new photometric catalogue of the rich globular cluster (GC) system around M87, the brightest cluster galaxy in Virgo. Using archival Next Generation Virgo cluster Survey (NGVS) images in

The cores of dwarf galaxy haloes

We use N-body simulations to examine the effects of mass outflows on the density profiles of cold dark matter (CDM) halos surrounding dwarf galaxies. In particular, we investigate the consequences of

Shallow dark matter cusps in galaxy clusters

We study the evolution of the stellar and dark matter components in a galaxy cluster of 10 15 M⊙ from z = 3 to the present epoch using the high-resolution collisionless simulations of Ruszkowski &

Mass estimation in the outer regions of galaxy clusters

We present a technique for estimating the mass in the outskirts of galaxy clusters where the usual assumption of dynamical equilibrium is not valid. The method assumes that clusters form through

The Masses of the Milky Way and Andromeda galaxies

We present a family of robust tracer mass estimators to compute the enclosed mass of galaxy haloes from samples of discrete positional and kinematical data of tracers, such as halo stars, globular

A kinematically distinct core and minor-axis rotation : the MUSE perspective on M87

We present evidence for the presence of a low-amplitude kinematically distinct component in the giant early-type galaxy M87, via datasets obtained with the SAURON and MUSE integral-field


High-quality observations of dark-matter-dominated low surface brightness (LSB) galaxies indicate that, in contrast to the triaxial, centrally concentrated cuspy halos formed in collisionless

The SLUGGS survey: multipopulation dynamical modelling of the elliptical galaxy NGC 1407 from stars and globular clusters

We perform in-depth dynamical modelling of the luminous and dark matter (DM) content of the elliptical galaxy NGC 1407. Our strategy consists of solving the spherical Jeans equations for three


We exploit the group environment of the CAmbridge Sloan Survey Of Wide ARcs in the skY z = 0.3 lens J2158+0257 to measure the group dynamical mass as a complement to the central dynamical and lensing

The impact of galaxy formation on the total mass, mass profile and abundance of haloes

We use cosmological hydrodynamical simulations to investigate how the inclusion of physical processes relevant to galaxy formation (star formation, metal-line cooling, stellar winds, supernovae and