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The signatures of the resonances of a large Galactic bar in local velocity space
Giacomo Monari, Benoit Famaey, Arnaud Siebert +2
The second data release of the Gaia mission has revealed a very rich structure in local velocity space. In terms of in-plane motions, this rich structure is also seen as multiple r…
The kinematics of the outer halo of M87 as mapped by planetary nebulae
A. Longobardi, M. Arnaboldi, O. Gerhard +2
We present a kinematic study of a sample of 298 planetary nebulas (PNs) in the outer halo of the central Virgo galaxy M87 (NGC~4486). The line-of-sight velocities of these PNs are…
The stellar populations of the central region of M31
R. P. Saglia, M. Opitsch, M. H. Fabricius +3
We continue the analysis of the dataset of our spectroscopic observation campaign of M31, by deriving simple stellar population properties (age metallicity and alpha-elements overa…
Three dynamically distinct stellar populations in the halo of M49
J. Hartke, M. Arnaboldi, O. Gerhard +6
M49 (NGC 4472) is the dominant galaxy in subcluster B of the Virgo Cluster, and a benchmark for studying the build-up of the extended halos of brightest group galaxies in the outsk…
Chemodynamical history of the Galactic Bulge
B. Barbuy, C. Chiappini, O. Gerhard
The Galactic Bulge can uniquely be studied from large samples of individual stars, and is therefore of prime importance for understanding the stellar population structure of bulges…
The Fornax Cluster VLT Spectroscopic Survey II - Planetary Nebulae kinematics within 200 kpc of the cluster core
C. Spiniello, N. R. Napolitano, M. Arnaboldi +10
We present the largest and most spatially extended planetary nebulae (PNe) catalog ever obtained for the Fornax cluster. We measured velocities of 1452 PNe out to 200 kpc in the cl…