Stellar Streams Discovered in the Dark Energy Survey
N. Shipp, A. Drlica-Wagner, E. Balbinot, P. Ferguson, D. Erkal, T. S., Li, K. Bechtol, V. Belokurov, B. Buncher, D. Carollo, M. Carrasco Kind, K., Kuehn, J. L. Marshall, A. B. Pace, E. S. Rykoff, I. Sevilla-Noarbe, E., Sheldon, L. Strigari, A. K. Vivas, B. Yanny, A. Zenteno

TL;DR
This paper reports the discovery of eleven new faint stellar streams in the Milky Way using DES data, enhancing understanding of the galaxy's halo and dark matter distribution.
Contribution
First use of DES data to detect faint stellar streams, including eleven new discoveries, expanding the known structure of the Milky Way's stellar halo.
Findings
Recovered four known stellar streams.
Discovered eleven new stellar streams.
Found evidence of extra-tidal structures around four globular clusters.
Abstract
We perform a search for stellar streams around the Milky Way using the first three years of multi-band optical imaging data from the Dark Energy Survey (DES). We use DES data covering sq. deg. to a depth of with a relative photometric calibration uncertainty of . This data set yields unprecedented sensitivity to the stellar density field in the southern celestial hemisphere, enabling the detection of faint stellar streams to a heliocentric distance of kpc. We search for stellar streams using a matched-filter in color-magnitude space derived from a synthetic isochrone of an old, metal-poor stellar population. Our detection technique recovers four previously known thin stellar streams: Phoenix, ATLAS, Tucana III, and a possible extension of Molonglo. In addition, we report the discovery of eleven new stellar streams. In general, the new streams…
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Taxonomy
TopicsAstronomy and Astrophysical Research · Stellar, planetary, and galactic studies · History and Developments in Astronomy
