397 citations · 3.6k across the 67 of their papers we have counts for
8 papers · 2 filters
A search for stellar structures around nine outer halo globular clusters in the Milky Way
Shumeng Zhang, Dougal Mackey, Gary Da Costa
We use deep imaging from the Dark Energy Camera to explore the peripheral regions of nine globular clusters in the outer halo of the Milky Way. Apart from Whiting 1 and NGC 7492, w…
: The Orbital and Chemical Properties of One Dozen Stellar Streams
Ting S. Li, Alexander P. Ji, Andrew B. Pace +19
We report the kinematic, orbital, and chemical properties of 12 stellar streams with no evident progenitors, using line-of-sight velocities and metallicities from the Southern Stel…
A panoramic view of the Local Group dwarf galaxy NGC 6822
Shumeng Zhang, Dougal Mackey, Gary Da Costa
We present a panoramic survey of the isolated Local Group dwarf irregular galaxy NGC 6822. Our photometry reaches magnitudes deeper than most previous studies and spans t…
Signature of a massive rotating metal-poor star imprinted in the Phoenix stellar stream
Andrew R. Casey, Alexander P. Ji, Terese T. Hansen +13
The Phoenix stellar stream has a low intrinsic dispersion in velocity and metallicity that implies the progenitor was probably a low mass globular cluster. In this work we use Mage…
Measuring the Mass of the Large Magellanic Cloud with Stellar Streams Observed by
Nora Shipp, Denis Erkal, Alex Drlica-Wagner +16
Stellar streams are excellent probes of the underlying gravitational potential in which they evolve. In this work, we fit dynamical models to five streams in the Southern Galactic…
Kinematics of Antlia 2 and Crater 2 from The Southern Stellar Stream Spectroscopic Survey (S5)
Alexander P. Ji, Sergey E. Koposov, Ting S. Li +15
We present new spectroscopic observations of the diffuse Milky Way satellite galaxies Antlia 2 and Crater 2, taken as part of the Southern Stellar Stream Spectroscopic Survey (S5).…
: The destruction of a bright dwarf galaxy as revealed by the chemistry of the Indus stellar stream
T. T. Hansen, A. P. Ji, G. S. Da Costa +13
The recently discovered Indus stellar stream exhibits a diverse chemical signature compared to what is found for most other streams due to the abundances of two outlier stars, Indu…
The dynamics of the globular cluster NGC3201 out to the Jacobi radius
Zhen Wan, William Oliver, Holger Baumgardt +7
As part of a chemo-dynamical survey of five nearby globular clusters with 2dF/AAOmega on the AAT, we have obtained kinematic information for the globular cluster NGC3201. Our new o…