92 citations · 343 across the 16 of their papers we have counts for
4 papers · 1 filter
Two substructures in the nearby stellar halo found in Gaia and RAVE
Hefan Li, Cuihua Du, Yanbin Yang +4
We use the second Gaia data release (Gaia DR2), combined with RAVE spectroscopic surveys, to identify the substructures in the nearby stellar halo. We select 3,845 halo stars kinem…
Existence of the Metal-Rich Stellar Halo and High-velocity Thick Disk in the Galaxy
Yepeng Yan, Cuihua Du, Hefan Li +3
Based on the second Gaia data release (DR2), combined with the LAMOST and APOGEE spectroscopic surveys, we study the kinematics and metallicity distribution of the high-velocity st…
Most dwarf spheroidal galaxies surrounding the Milky Way cannot be dark-matter dominated satellites
Francois Hammer, Yanbin Yang, Frederic Arenou +5
Milky Way dwarf spheroidal galaxies are the tiniest observed galaxies and are currently associated with the largest fractions of dark matter, which is revealed by their too large v…
Orbital evidences for dark-matter-free Milky Way dwarf spheroidal galaxies
Francois Hammer, Yanbin Yang, Frederic Arenou +4
The nature of Milky Way dwarf spheroidals (MW dSphs) has been questioned, in particular whether they are dominated by dark matter (DM). Here we investigate an alternative scenario,…