195 citations · 1.3k across the 24 of their papers we have counts for
8 papers · 1 filter
Tidal Stream Morphology as an Indicator of Dark Matter Halo Geometry: the Case of Palomar 5
Sarah Pearson, Andreas H. W. Küpper, Kathryn V. Johnston +1
This paper presents an example where the morphology of a single stellar stream can be used to rule out a specific galactic potential form without the need for velocity information.…
The effect of primordial mass segregation on the size scale of globular clusters
Hosein Haghi, Seyed Mohammad Hoseini-Rad, Akram Hasani Zonoozi +1
We use direct -body calculations to investigate the impact of primordial mass segregation on the size scale and mass-loss rate of star clusters in a galactic tidal field. We run…
The Puzzling Negative Orbit-Period Derivative of the Low-Mass X-Ray Binary 4U 1820-30 in NGC 6624
Miklos Peuten, Michael Brockamp, Andreas H. W. Kuepper +1
4U 1820-30 is a low-mass X-ray binary near the center of the globular cluster NGC 6624 consisting of, at least, one neutron star and one helium white dwarf. Analyzing 16 years of d…
Mass segregation in the outer halo globular cluster Palomar 14
Matthias J. Frank, Eva K. Grebel, Andreas H. W. Kuepper
We present evidence for mass segregation in the outer-halo globular cluster Palomar 14, which is intuitively unexpected since its present-day two-body relaxation time significantly…
Milky Way Mass and Potential Recovery Using Tidal Streams in a Realistic Halo
Ana Bonaca, Marla Geha, Andreas H. W. Kuepper +3
We present a new method for determining the Galactic gravitational potential based on forward modeling of tidal stellar streams. We use this method to test the performance of smoot…
How tidal erosion has shaped the relation between globular cluster specific frequency and galaxy luminosity
Steffen Mieske, Andreas Kuepper, Michael Brockamp
We quantify to what extent tidal erosion of globular clusters (GCs) has contributed to the observed u-shaped relation between GC specific frequencies S_N and host galaxy luminosity…