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IfA Team Discovers Most Distant Galaxy

The center of the Abell 370 cluster field seen in red optical (I + Z) and infrared (J+K') light. The arrow shows the position of the most distant galaxy.

An international team led by the IfA's Dr. Esther Hu discovered a galaxy that is the most distant discovered so far and therefore gives the earliest glimpse yet of the epoch when galaxies and stars formed in the Universe.

The newly discovered galaxy formed when the Universe was about 780 million years old. This is about 50 million years earlier than the most distant quasar, and 80 million years earlier than the speculated period of reionization.

Other IfA members of the team are Dr. Lennox Cowie and graduate student Peter Capak. The discovery was published in the April 1 issue of The Astrophysical Journal Letters.

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