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Measuring the vertical age structure of the Galactic disc using asteroseismology and SAGA
L. Casagrande, V. Silva Aguirre, K. J. Schlesinger +10
The existence of a vertical age gradient in the Milky Way disc has been indirectly known for long. Here, we measure it directly for the first time with seismic ages, using red gian…
Kinematic Detection of the Galactic Nuclear Disc
Ralph Schönrich, Michael Aumer, Stuart E. Sale
We report the detection of the Galactic nuclear disc in line-of-sight kinematics of stars, measured with infrared spectroscopy from APOGEE. This stellar component of the nuclear di…
Origin of the high v_los feature in the Galactic bar
Michael Aumer, Ralph Schönrich
We analyse a controlled N-body + smoothed particle hydrodynamics simulation of a growing disc galaxy within a non-growing, live dark halo. The disc is continuously fed with gas and…