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Evidence of Fanning in the Ophiuchus Stream
B. Sesar, A. M. Price-Whelan, J. G. Cohen +11
The Ophiuchus stellar stream presents a dynamical puzzle: its old stellar populations ( Gyr) cannot be reconciled with (1) its orbit in a simple model for the Milky Way po…
Globular Cluster Streams as Galactic High-Precision Scales
A. H. W. Küpper, E. Balbinot, A. Bonaca +4
Tidal streams of globular clusters are ideal tracers of the Galactic gravitational potential. Compared to the few known, complex and diffuse dwarf-galaxy streams, they are kinemati…
Tidal debris morphology and the orbits of satellite galaxies
David Hendel, Kathryn V. Johnston
How do galaxies move relative to one another? While we can examine the motion of dark matter subhalos around their hosts in simulations of structure formation, determining the orbi…
Chaotic Dispersal of Tidal Debris
Adrian M. Price-Whelan, Kathryn V. Johnston, Monica Valluri +3
Several long, dynamically cold stellar streams have been observed around the Milky Way Galaxy, presumably formed from the tidal disruption of globular clusters. In integrable poten…
A re-interpretation of the Triangulum-Andromeda stellar clouds: a population of halo stars kicked out of the Galactic disk
Adrian M. Price-Whelan, Kathryn V. Johnston, Allyson A. Sheffield +2
The Triangulum-Andromeda stellar clouds (TriAnd1 and TriAnd2) are a pair of concentric ring- or shell-like over-densities at large ( 30 kpc) and ( -10 kpc…
Globular Cluster Streams as Galactic High-Precision Scales - The Poster Child Palomar 5
Andreas H. W. Küpper, Eduardo Balbinot, Ana Bonaca +4
Using the example of the tidal stream of the Milky Way globular cluster Palomar 5 (Pal 5), we demonstrate how observational data on streams can be efficiently reduced in dimensiona…