Galactic Archaeology

As the nearest galactic laboratory available for study, the Local Group harbors the faintest and most dark-matter dominated known galaxies. The sample of observed dwarf satellites surrounding the Milky Way and Andromeda is continually growing, and so is the list of diverse detected substructures in the outer reaches of our Galaxy’s halo. Knowledge of our own cosmic backyard is especially critical to building up our understanding of the Universe at large. In this effort, simulations are our only access to the time axis, as they allow us to reconstruct past possible histories of the interplay between members of the Local Group.

These projects were carried out with collaborators at the Harvard-Smithsonian Center for Astrophysics, the University of Maryland, and the Max-Planck Institut for Astronomie in Heidelberg, Germany.



Data Download

In Dierickx & Loeb (2017, ApJ, 836:92) I simulated the infall of the Sagittarius dwarf spheroidal into the Milky Way. The files below contain six-dimensional phase-space coordinates for the simulated particles associated with the Sagittarius galaxy at the time of best match to the present.

Stellar particles data
Dark matter particles data

Related Papers
Upper Limit on the Milky Way Mass from the Orbit of the Sagittarius Dwarf Galaxy (2017, ApJ 847:42, 2017)
The >100 kpc Distant Spur of the Sagittarius Stream and the Outer Virgo Overdensity, as Seen in PS1 RR Lyrae Stars (2017, ApJL 844:L4)

Copyright Notice
Please note that all papers are the copyright of the respective journals in which they are published, and should be cited appropriately. Any publications wishing to use data available on this website should additionally acknowledge this website as the source for that data.


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