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Kinematical Structure of the Magellanic System
Roeland P. van der Marel, Nitya Kallivayalil, Gurtina Besla
We review our understanding of the kinematics of the LMC and the SMC, and their orbit around the Milky Way. The line-of-sight velocity fields of both the LMC and SMC have been mapp…
The Binarity of the Magellanic Clouds and the Formation of the Magellanic Stream
Gurtina Besla, Nitya Kallivayalil, Lars Hernquist +4
The HST proper motion (PM) measurements of the Clouds have severe implications for their interaction history with the Milky Way (MW) and with each other. The Clouds are likely on t…
New Analysis of the Proper Motions of the Magellanic Clouds using HST/WFPC2
Nitya Kallivayalil, Roeland P. van der Marel, Jay Anderson +2
In HST Cycles 11 and 13 we obtained two epochs of ACS/HRC data for fields in the Magellanic Clouds centered on background quasars. We used these data to determine the proper motion…
Intermediate Mass Black Hole Induced Quenching of Mass Segregation in Star Clusters
Michael Gill, Michele Trenti, M. Coleman Miller +3
In many theoretical scenarios it is expected that intermediate-mass black holes (IMBHs, with masses M ~ 100-10000 solar masses) reside at the centers of some globular clusters. How…
HST/ACS Observations of Star Formation Driven Outflows in Nearby Edge-on Spiral Galaxies: Dependence of Halo Morphology on Star Formation Activity
Joern Rossa, Michael Dahlem, Ralf-Juergen Dettmar +1
(Abridged). We present new high spatial resolution narrowband imaging observations of extraplanar diffuse ionized gas (eDIG) in four late-type, actively star forming edge-on spiral…