Astronomers used x-rays detect an extrasolar planet for the first time in front of the parent star crossed

Astronomers used x-rays detected outside our solar system for the first time in front of the parent star through the planets. Them through the United States NASA's Chandra x-ray Observatory and the European Space Agency's x-ray multi mirror Newton Observatory photographed in HD 189,733 planet. HD 189,733 is a binary system of 63 light years from Earth.

So far, astronomers just observed by visible light in a process called transits of outer planets cross in front of parent star. United States, Shorenstein Center of science in the Harvard-Smithsonian Astrophysics Katja Hahn-bopenghajieer said: "we have see thousands of candidate planet using visible light through in front of the parent star. X-ray study of exoplanets is important, because it shows a planetary characteristics of new information. ”

The planet called HD 189733b, is a hot Jupiter, meaning it as large as Jupiter in our solar system, and orbit the parent star around at very close range. It is also a huge gas giant. Its atmosphere is very hot, temperatures above 1000 degrees Celsius. United States NASA believes that it is closest to Earth Hot Jupiter, so you want to know more about these planets and their atmospheres astronomer's main objectives.

Hubble is too telescope in July for the first time to determine the outer planet shining blue. This color was the result of silicate particles in the atmosphere scatter blue light. Astronomers using the Chandra x-ray Observatory of the latest observations allows researchers to understand how the outer planets and the star influences interact.

It is well known that astronomers for nearly 10 years been probing HD 189,733 binary systems the main star's ultraviolet and x-ray radiation. Over time, this system evaporates HD 189733b's atmosphere. They estimated it lost between 100 million and 600 million kilograms of quality per second. HD 189733b's atmosphere becomes smaller, thinner 25% per cent, and the faster rate than previously thought. Research, one of the heads of the Harvard-Smithsonian Astrophysics Centre of science Scott-Volcker said: "this extension of the planet's atmosphere made it a bigger target for by parent star high energy radiation, causing the atmosphere to evaporate. ”

The host star HD 189,733 also have a light red companion star. First time in astronomers by Chandra x-ray Observatory x-ray detected its presence. These stars might formed at the same time, but since the host stars rotate faster, showing increased geomagnetic activity, so between 3 billion and 3.5 billion years younger than its companion star. Meanwhile, in the x-ray brightness of the main stars are its companion star 30 times. Bopenghajieer said: "this hot Jupiter might host star rapid rotation and a high level of geomagnetic activity, tidal force causes it to behave in some ways like a younger star.