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MUSE observations of the lensing cluster SMACSJ2031.8-4036: new constraints on the mass distribution in the cluster core
J. Richard, V. Patricio, J. Martinez +10
We present new observations of the lensing cluster SMACSJ2031.8-4036 obtained with the MUSE integral field spectrograph as part of its commissioning on the Very Large Telescope. By…
The Stability of Galaxy Disks
Kyle B. Westfall, David R. Andersen, Matthew A. Bershady +3
We calculate the stellar surface mass density (Sigma_*) and two-component (gas+stars) disk stability (Q_RW) for 25 late-type galaxies from the DiskMass Survey. These calculations a…
The DiskMass Survey. VII. The distribution of luminous and dark matter in spiral galaxies
Thomas P. K. Martinsson, Marc A. W. Verheijen, Kyle B. Westfall +3
We present dynamically-determined rotation-curve mass decompositions of 30 spiral galaxies, which were carried out to test the maximum-disk hypothesis and to quantify properties of…
The DiskMass Survey. VI. Gas and stellar kinematics in spiral galaxies from PPak integral-field spectroscopy
Thomas P. K. Martinsson, Marc A. W. Verheijen, Kyle B. Westfall +4
We present ionized-gas (OIII) and stellar kinematics (velocities and velocity dispersions) for 30 nearly face-on spiral galaxies out to as much as three disk scale lengths (h_R). T…
Galaxy Disks are Submaximal
Matthew A. Bershady, Thomas P. K. Martinsson, Marc A. W. Verheijen +3
We measure the contribution of galaxy disks to the overall gravitational potential of 30 nearly face-on intermediate-to-late-type spirals from the DiskMass Survey. The central vert…
The DiskMass Survey. IV. The Dark-Matter-Dominated Galaxy UGC 463
Kyle B. Westfall, Matthew A. Bershady, Marc A. W. Verheijen +4
We present a detailed and unique mass budget for the high-surface-brightness galaxy UGC 463, showing it is dominated by dark matter (DM) at radii beyond one scale length (h_R) and…
The DiskMass Survey. II. Error Budget
Matthew A. Bershady, Marc A. W. Verheijen, Kyle B. Westfall +3
We present a performance analysis of the DiskMass Survey. The survey uses collisionless tracers in the form of disk stars to measure the surface-density of spiral disks, to provide…
The DiskMass Survey. I. Overview
Matthew A. Bershady, Marc A. W. Verheijen, Rob A. Swaters +3
We present a survey of the mass surface-density of spiral disks, motivated by outstanding uncertainties in rotation-curve decompositions. Our method exploits integral-field spectro…