UOL - Galáxia mais brilhante é batizada de CR-7 em homenagem a Cristiano Ronaldo - Universidade Ufo Brasileira

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quarta-feira, 17 de junho de 2015

UOL - Galáxia mais brilhante é batizada de CR-7 em homenagem a Cristiano Ronaldo

Imagem artística da galáxia CR-7, três vezes mais brilhante que a Himiko, até então a mais luminosa
Imagem artística da galáxia CR-7, três vezes mais brilhante que a Himiko, até então a mais luminosa

A team of astrophysicists, led by the Institute of Astrophysics and Space Sciences, University of Lisbon, found the brightest galaxy ever recorded. The discovery was named CR-7, named after the Portuguese player Cristiano Ronaldo.
"[We chose the name] to also be a truly extraordinary galaxy. And the discovery of the stars coincided with the third prize Ronaldo's Ballon d'Or," said the lead researcher, David Sobral.
The CR-7 galaxy is made up of third generation star, formed about 800 million years after the Big Bang, something considered very close to the origin of the universe, now 13.7 billion years. Finding these stars composed of hydrogen and helium is extremely difficult.
In a quick look on the periodic table, we realize that these two elements - hydrogen and helium -. Are at the top and was the first to be formed "These stars literally invented the periodic table and chemistry, because heavy elements formed the first when exploded at the end of their lives, such as super-new, "said Sobral. The younger stars, like our Sun, are the first population group. The presence of heavy metals This is quite in their chemical composition.
The researcher compares the use of the telescope to a time machine. "We are literally seeing the CR-7 as it was there 12 900 million years. Each of the stars in the brightest area of ​​CR7 has a brightness that should be about 1 to 10 million times greater than the sun. It is so brilliant, "he says.
The first evidence of the galaxy was found in November 2014 with Subaru telescope data in Hawaii. The image impressed astrophysicists who then requested the use of the VLT telescope, located in Chile and Keck also in Hawaii. The measurements were repeated in different telescopes, and with different instruments on the same telescope. At the end, data from the Hubble Space Telescope have confirmed the discovery.
Sobral says that after the discovery of Himiko, hitherto considered the brightest galaxy, most research is focused on small areas of the universe and the experiment coordinated by they made the opposite way, to map large areas.
Fonte: http://noticias.uol.com.br/ciencia/ultimas-noticias/redacao/2015/06/17/galaxia-mais-brilhante-e-batizada-de-cr-7-em-homenagem-a-cristiano-ronaldo.htm
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