723 citations · 6.3k across the 79 of their papers we have counts for
9 papers · 2 filters
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…
Variable Stars in Local Group Galaxies. I: Tracing the Early Chemical Enrichment and Radial Gradients in the Sculptor dSph with RR Lyrae Stars
C. E. Martínez-Vázquez, M. Monelli, G. Bono +7
We identified and characterized the largest (536) RR Lyrae (RRL) sample in a Milky Way dSph satellite (Sculptor) based on optical photometry data collected over 24 years. The…
The Spatially-Resolved Star Formation History of the M31 Outer Disc
Edouard J. Bernard, Annette M. N. Ferguson, Scott C. Chapman +4
We present deep Hubble Space Telescope Advanced Camera for Surveys observations of the stellar populations in two fields lying at 20 and 23 kpc from the centre of M31 along the sou…
The ACS LCID Project: On the origin of dwarf galaxy types: a manifestation of the halo assembly bias?
C. Gallart, M. Monelli, L. Mayer +13
We discuss how knowledge of the whole evolutionary history of dwarf galaxies, including details on the early star formation events, can provide insight on the origin of the differe…
A Hyper Suprime-Cam View of the Interacting Galaxies of the M81 Group
Sakurako Okamoto, Nobuo Arimoto, Annette M. N. Ferguson +4
We present the first results of a wide-field mapping survey of the M81 group conducted with Hyper Suprime-Cam on the Subaru Telescope. Our deep photometry reaches magnitude…
Sagittarius II, Draco II and Laevens 3: three new Milky Way satellites discovered in the Pan-STARRS 1 3pi Survey
Benjamin P. M. Laevens, Nicolas F. Martin, Edouard J. Bernard +17
We present the discovery of three new Milky Way satellites from our search for compact stellar overdensities in the photometric catalog of the Panoramic Survey Telescope and Rapid…