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Ghostly Galaxies: exploring the universe with the Dragonfly Telescope

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Eddingtion Lecture 2015

While there have been tremendous advances in our imaging and spectroscopic capabilities over the past decades, the low surface brightness sky remains relatively unexplored. The Dragonfly Telephoto Array was developed with the specific aim of detecting the diffuse emission from large, low surface brightness objects and structures. The talk will discuss the Dragonfly concept, and highlight recent and ongoing science projects. The most striking early result from Dragonfly is the discovery of a substantial population of large, diffuse galaxies in the Coma cluster. These objects are as faint as dwarf galaxies in the Local Group but as large as the Milky Way. It is not yet understood how these galaxies were formed, and how they are able to survive in the cluster environment.

This talk is part of the The Eddington Lectures series.

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