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The central molecular gas structure in LINERs with low luminosity AGN: evidence for gradual disappearance of the torus
F. Müller-Sánchez, M. A. Prieto, M. Mezcua +3
We present observations of the molecular gas in the nuclear environment of three prototypical low luminosity AGN (LLAGN), based on VLT/SINFONI AO-assisted integral-field spectrosco…
Constraining the Galactic potential via action-based distribution functions for mono-abundance stellar populations
Yuan-Sen Ting, Hans-Walter Rix, Jo Bovy +1
We present a rigorous and practical way of constraining the Galactic potential based on the phase-space information for many individual stars. Such an approach is needed to dynamic…
A census of orbital properties of the M31 satellites
Laura L. Watkins, N. Wyn Evans, Glenn van de Ven
We present an analysis of the dynamics of the M31 satellite system. Proper motion data exist for only two of the M31 satellites. We account for this incompleteness in velocity data…
Formation and evolution of dwarf early-type galaxies in the Virgo cluster II. Kinematic Scaling Relations
E. Toloba, A. Boselli, R. Peletier +3
We place our sample of 18 Virgo dwarf early-type galaxies (dEs) on the V-K - velocity dispersion, Faber-Jackson, and Fundamental Plane (FP) scaling relations for massive early-type…
Virgo Cluster and field dwarf ellipticals in 3D: I. On the variety of stellar kinematic and line-strength properties
Agnieszka Ryś, Jesús Falcón-Barroso, Glenn van de Ven
We present the first large-scale stellar kinematic and line-strength maps for dwarf elliptical galaxies (9 in the Virgo Cluster and 3 in the field environment) obtained with the SA…
The Gravitational Potential Near the Sun From SEGUE K-dwarf Kinematics
Lan Zhang, Hans-Walter Rix, Glenn van de Ven +3
To constrain the Galactic gravitational potential near the Sun (1.5 kpc), we derive and model the spatial and velocity distribution for a sample of 9000 K-dwarfs that have sp…
A resonant feature near the Perseus arm revealed by red clump stars
Chao Liu, Xiangxiang Xue, Min Fang +4
We investigate the extinction together with the radial velocity dispersion and distribution of red clump stars in the anti-center direction using spectra obtained with Hectospec on…
Orbit-based dynamical models of the Sculptor dSph galaxy
Maarten A. Breddels, A. Helmi, R. C. E. van den Bosch +2
We have developed spherically symmetric dynamical models of dwarf spheroidal galaxies using Schwarzschild's orbit superposition method. This type of modelling yields constraints bo…
The SAURON project-XXI. The spatially-resolved UV-line strength relations of early-type galaxies
Hyunjin Jeong, Sukyoung K. Yi, Martin Bureau +13
The unexpected rising flux of early-type galaxies at decreasing ultraviolet (UV) wavelengths is a long-standing mystery. One important observational constraint is the correlation b…
Chemo-orbital evidence from SDSS/SEGUE G-type dwarf stars for a mixed origin of the Milky Way's thick disk
Chao Liu, Glenn van de Ven
We combine the estimated metallicities [Fe/H], abundances [α/Fe], positions and motions of a sample of 27,500 local (7<R/kpc<9, 0.5<|z|/kpc<2.5) SDSS/SEGUE G-type dwarf stars to in…