275 citations · 676 across the 9 of their papers we have counts for
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Dynamical Models of Elliptical Galaxies in z=0.5 Clusters: II. Mass-to-Light Ratio Evolution without Fundamental Plane Assumptions
Roeland P. van der Marel, Pieter G. van Dokkum
We study M/L evolution of early-type galaxies using dynamical modeling of resolved internal kinematics. This makes fewer assumptions than Fundamental Plane (FP) studies and provide…
Dynamical Models of Elliptical Galaxies in z=0.5 Clusters: I. Data-Model Comparison and Evolution of Galaxy Rotation
Roeland P. van der Marel, Pieter G. van Dokkum
We present spatially resolved stellar rotation velocity and velocity dispersion profiles form Keck/LRIS absorption-line spectra for 25 galaxies, mostly visually classified elliptic…
Is the SMC Bound to the LMC? The HST Proper Motion of the SMC
Nitya Kallivayalil, Roeland P. van der Marel, Charles Alcock
We present a measurement of the systemic proper motion of the Small Magellanic Cloud (SMC) made using the Advanced Camera for Surveys (ACS) on the \textit{Hubble Space Telescope} (…
Optical Counterparts of Ultra-Luminous X-ray Sources identified from Archival Hubble Space Telescope/WFPC2
A. Ptak, E. Colbert, R. Van der Marel +3
We present a systematic analysis of archival HST WFPC2 ``Association'' data sets that correlate with the Chandra positions of a set of 44 ultra-luminous X-ray sources (ULXs) of nea…
Understanding the Nuclear Gas Dispersion in Early-Type Galaxies in the Context of Black Hole Demographics
Gijs Verdoes Kleijn, Roeland van der Marel, Jacob Noel-Storr
(abridged) We analyze and model HST /STIS observations of a sample of 27 galaxies; 16 Fanaroff & Riley Type I radio galaxies and 11 (more) normal early-type galaxies. We focus here…