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7 papers · 1 filter
Kinematics at the Edge of the Galactic Bulge: Evidence for Cylindrical Rotation
Christian D. Howard, R. Michael Rich, Will Clarkson +9
We present new results from BRAVA, a large scale radial velocity survey of the Galactic bulge, using M giant stars selected from the Two Micron All Sky Survey catalogue as targets…
Star Cluster Evolution in Dark Matter Dominated Galaxies
A. K. Praagman, J. R. Hurley, C. Power
We investigate the influence of the external tidal field of a dark matter halo on the dynamical evolution of star clusters using direct N-body simulations, where we assume that the…
On the Reported Death of the MACHO Era
D. P. Quinn, M. I. Wilkinson, M. J. Irwin +3
We present radial velocity measurements of four wide halo binary candidates from the sample in Chaname & Gould (2004; CG04) which, to date, is the only sample containing a large nu…
Pre-nova X-ray observations of V2491 Cyg (Nova Cyg 2008b)
A. Ibarra, E. Kuulkers, J. P. Osborne +12
Classical novae are phenomena caused by explosive hydrogen burning on an accreting white dwarf. So far, only one classical nova has been identified in X-rays before the actual opti…
Intermediate polars in the Swift/BAT survey: Spectra and white dwarf masses
Jorg Brunschweiger, Jochen Greiner, Marco Ajello +1
White dwarf masses in cataclysmic variables are difficult to determine accurately, but are fundamental for understanding binary system parameters, as well as binary evolution. We i…
Circular polarization survey of intermediate polars I. Northern targets in the range 17h<R.A.<23h
O. W. Butters, S. Katajainen, A. J. Norton +2
Context. The origin, evolution, and ultimate fate of magnetic cataclysmic variables are poorly understood. It is largely the nature of the magnetic fields in these systems that lea…