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Galactic Tides and the Shape and Orientation of Dwarf Galaxy Satellites
Galactic Tides and the Shape and Orientation of Dwarf Galaxy Satellites
Christopher Barber, Else Starkenburg, Julio F. Navarro, Alan W. McConnachie, submitted to MNRAS June 26, 2014
On this webpage you can find supplementary movies for the above-titled paper, showing how the orientation of some subhaloes changes over time as they accrete onto the main halo.
Link to pdf of paper: PotShape_arxiv.pdf (492 kB)
Previous paper: Barber, Christopher; Starkenburg, Else; Navarro, Julio F.; McConnachie, Alan W.; Fattahi, Azadeh, The orbital ellipticity of satellite galaxies and the mass of the Milky Way, 2014, MNRAS, 437, 959. ADS link
Here is a movie of the subhalo shown in Fig. 9 of our paper, oriented into the plane of the orbit at z=0. Time since infall is shown in the top left corner, and the red circle indicates the virial radius (r200) of the main halo at each snapshot. The direction of the subhalo's major axis is indicated by a solid black line.
movie_nontumbler.mp4 (176 kB)
As above, except here we have the subhalo shown in Fig 11 of our paper. In this video we also show the perturber that caused the subhalo to start tumbling rapidly before first pericentre as a blue circle.
movie_tumbler.mp4 (185 kB)
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