Abstract / Description of output
A central tenet of the current cosmological paradigm is that galaxies
grow over time through the accretion of smaller systems. Here, we
present new kinematic measurements near the centre of one of the densest
pronounced substructures, the South-West Cloud, in the outer halo of our
nearest giant neighbour, the Andromeda galaxy. These observations reveal
that the kinematic properties of this region of the South-West Cloud are
consistent with those of PA-8, a globular cluster previously shown to be
co-spatial with the stellar substructure. In this sense, the situation
is reminiscent of the handful of globular clusters that sit near the
heart of the Sagittarius dwarf galaxy, a system that is currently being
accreted into the Milky Way, confirming that accretion deposits not only
stars but also globular clusters into the haloes of large galaxies.
Original language | English |
---|---|
Pages (from-to) | L89-L93 |
Journal | Monthly Notices of the Royal Astronomical Society: Letters |
Volume | 445 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Nov 2014 |
Keywords / Materials (for Non-textual outputs)
- galaxies: evolution
- galaxies: haloes
- galaxies: individual: M31
- galaxies: kinematics and dynamics
- galaxies: star clusters: general