Výsledky vyhledávání - "Oldham, L. J."

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The most massive galaxies in clusters are already fully grown at $z \sim 0.5$

Autor: Oldham, L. J., Houghton, R. C. W., Davies, Roger L.

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 structural evolution of the galaxies. We calculate m

Externí odkaz: http://arxiv.org/abs/1610.08554

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Is there substructure around M87?

Autor: Oldham, L. J., Evans, N. W.

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 galaxy (BCG) in a virialised cluster, or dwarf satel

Externí odkaz: http://arxiv.org/abs/1607.02477

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

Autor: Oldham, L. J., Auger, M. W.

Following a number of conflicting studies of M87's mass profile, we undertake a dynamical analysis of multiple tracer populations to constrain its mass over a large radius range. We combine stellar kinematics in the central regions with the dynamics

Externí odkaz: http://arxiv.org/abs/1601.01323

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

Autor: Oldham, L. J., Auger, M. W.

Publikováno v: 2016MNRAS.455..820O

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 ugriz bands, observed with CFHT/MegaPrime, we

Externí odkaz: http://arxiv.org/abs/1511.07046

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