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Forty-Seven Milky Way-Sized, Extremely Diffuse Galaxies in the Coma Cluster
Pieter van Dokkum, Roberto Abraham, Allison Merritt +3
We report the discovery of 47 low surface brightness objects in deep images of a 3 x 3 degree field centered on the Coma cluster, obtained with the Dragonfly Telephoto Array. The o…
The discovery of seven extremely low surface brightness galaxies in the field of the nearby spiral galaxy M101
Allison Merritt, Pieter van Dokkum, Roberto Abraham
Dwarf satellite galaxies are a key probe of dark matter and of galaxy formation on small scales and of the dark matter halo masses of their central galaxies. They have very low sur…
First results from the Dragonfly Telephoto Array: the apparent lack of a stellar halo in the massive spiral galaxy M101
Pieter van Dokkum, Roberto Abraham, Allison Merritt
We use a new telescope concept, the Dragonfly Telephoto Array, to study the low surface brightness outskirts of the spiral galaxy M101. The radial surface brightness profile is mea…