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The AGB population of NGC 6822: distribution and the C/M ratio from JHK photometry
L. F. Sibbons, S. G. Ryan, M. -R. L. Cioni M. Irwin +1
NGC 6822 is an irregular dwarf galaxy and part of the Local Group. Its close proximity and apparent isolation provide a unique opportunity to study galactic evolution without any o…
The Dynamical and Chemical Evolution of Dwarf Spheroidal Galaxies with GEAR
Yves Revaz, Pascale Jablonka
We present a fully parallel chemo-dynamical Tree/SPH code, GEAR, which allows to perform high resolution simulations with detailed chemical diagnostics. Starting from the public ve…
A Keck/DEIMOS spectroscopic survey of the faint M31 satellites And IX, And XI, And XII, and And XIII
M. L. M. Collins, S. C. Chapman, M. J. Irwin +8
We present the first spectroscopic analysis of the faint M31 satellite galaxies, AndXI and AndXIII, and a reanalysis of existing spectroscopic data for two further faint companions…
Life at the Periphery of the Local Group: the kinematics of the Tucana Dwarf Galaxy
F. Fraternali, E. Tolstoy, M. Irwin +1
Dwarf spheroidal galaxies in the Local Group are usually located close to the Milky Way or M31. Currently, there are two clear exceptions to this rule, and the Tucana dwarf galaxy…