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DECam Community Workshop

DECam Community Science Workshop 2018: Science Highlights, Coming Opportunities, LSST Synergies

May 21-22, 2018 • Tucson, Arizona

Talk Abstracts

Stellar Streams Discovered in the Dark Energy Survey [2.5 MB PDF]

Nora Shipp

We present the discovery of new stellar streams within the Dark Energy Survey (DES). The DES data covers ∼5000 sq. deg. to a depth of g > 23.5 with a relative photometric calibration uncertainty of < 1%. 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 ∼50 kpc. Our analysis of the DES data has led to the discovery of eleven new stellar streams, improved observations of four previously known streams, and revealed evidence of extra-tidal stellar structure associated with four globular clusters: NGC 288, NGC 1261, NGC 1851, and NGC 1904. The study of this ever-growing sample of stellar streams will provide insight into the formation of the Galactic stellar halo, the Milky Way gravitational potential, as well as the large- and small-scale distribution of dark matter around the Milky Way.

Authors: Nora Shipp


The DECam Community Science Workshop is sponsored by the National Optical Astronomy Observatory (NOAO). NOAO is operated by the Association of Universities for Research in Astronomy (AURA), Inc. under cooperative agreement with the National Science Foundation.

AURA, inc. NSF

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