Lynx arch

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Lynx Arc

The Lynx Arc (Engl. Lynx Arc) was established in 2003 at the Keck Observatory discovered and considered to be the hottest yet discovered star-forming region of the Universe (2003).

It is located in the constellation Lynx , about 12 billion light years ( z = 3,357 ) from Earth, 8 million times further than the Orion Nebula, and is a million times brighter than it. It is estimated that there are over a million blue giants in the lynx arch (comparison of the Orion Nebula: 4 blue giants).

The discovery was made through a systematic search with the help of a gravitational lens . A galaxy cluster 4.5 billion light-years away from Earth acts as a gravitational lens ( RX J0848 + 4456 , z = 0.570). In addition to the Keck Observatory, the Hubble Space Telescope and ROSAT were also involved in the search.

At 80,000 ° C, the temperature of the star surfaces in the lynx arch is about twice that of the previously known stars in our immediate vicinity. Only the first stars after the formation of the universe are estimated to be even hotter at 120,000 ° C. The great distance to the lynx arch provides a glimpse into the past 12 billion years ago, long before our solar system even existed. At that time the universe was 2 billion years old. The first stars in the universe formed 1.8 billion years before the lynx arch.

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  1. ^ RAE Fosbury et al. (2003 October 20) "Massive Star Formation in a Gravitationally Lensed H II Galaxy at z = 3.357" , The Astrophysical Journal , 596: 797-809
  2. ↑ a b Sol Station, Lynx Arc