Wednesday, September 17, 2008

First picture of likely planet around sun-like star unveiled

Three scientists from astronomy and astrophysics used the Gemini North telescope on Mauna Kea in Hawaii to take images of the young star 1RXS J160929.1-210524 (which lies outside the solar system at about 500 light-years from Earth) and a candidate companion of that star. They also obtained spectra to confirm the nature of the companion, which has a mass about eight times that of Jupiter and lies roughly 330 times the Earth-sun distance away from its star. (For comparison, the most distant planet in our solar system, Neptune, orbits the sun at only about 30 times the Earth-sun distance.) The parent star is similar in mass to the sun but is much younger. [...] Even though the likelihood of a chance alignment between such an object and a similarly young star is rather small, it will take up to two years to verify that the star and its likely planet are moving through space together. "Of course it would be premature to say that the object is definitely orbiting this star but the evidence is extremely compelling. This will be a very intensely studied object for the next few years," Lafrenicre said. Full Article...

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