Search Results for author: Alexander H. Riley

Found 2 papers, 2 papers with code

Snakes on a Plane: do Milky Way stellar streams and globular clusters align in a Vast Polar Structure?

1 code implementation30 Jan 2020 Alexander H. Riley, Louis E. Strigari

Using systemic proper motions inferred from Gaia data, we find that globular cluster orbital poles are not clustered in the VPOS direction, though the population with the highest VPOS membership fraction is the young halo clusters (~30%).

Astrophysics of Galaxies

The velocity anisotropy of the Milky Way satellite system

2 code implementations24 Oct 2018 Alexander H. Riley, Azadeh Fattahi, Andrew B. Pace, Louis E. Strigari, Carlos S. Frenk, Facundo A. Gómez, Robert J. J. Grand, Federico Marinacci, Julio F. Navarro, Rüdiger Pakmor, Christine M. Simpson, Simon D. M. White

We analyse the orbital kinematics of the Milky Way (MW) satellite system utilizing the latest systemic proper motions for 38 satellites based on data from $Gaia$ Data Release 2.

Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics

Cannot find the paper you are looking for? You can Submit a new open access paper.