Kinematic transitions and streams in galaxy halos
Astrophysics of Galaxies
2014-02-17 v1 Cosmology and Nongalactic Astrophysics
Abstract
The chemo-dynamics of galaxy halos beyond the Local Group may now be mapped out through the use of globular clusters and planetary nebulae as bright tracer objects, along with deep multi-slit spectroscopy of the integrated stellar light. We present results from surveying nearby early-type galaxies, including evidence for kinematically distinct halos that may reflect two-phase galaxy assembly. We also demonstrate the utility of the tracer approach in measuring the kinematics of stellar substructures around the Umbrella Galaxy, which allow us to reconstruct the progenitor properties and stream orbit.
Cite
@article{arxiv.1401.7673,
title = {Kinematic transitions and streams in galaxy halos},
author = {A. J. Romanowsky and J. A. Arnold and J. P. Brodie and C. Foster and D. A. Forbes and H. Lux and D. Martinez-Delgado and J. Strader and S. Zibetti and the SLUGGS team},
journal= {arXiv preprint arXiv:1401.7673},
year = {2014}
}
Comments
Multi-Spin Galaxies, ASP conference Series, in press, eds. E. Iodice et al., 4 pages, 2 figures