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Using & # 39; advanced technology, group & # 39; Astronomical Observatory in Keck had Water discovered in atmosphere & # 39; exoplanet 179 light years & # 39; away from our. it is about HR 8799 c, Which is in the solar system that revolves around the star HR 8799.
In 2008, scientists announced that, using the Keck and Gemini telescopes, they observed three exoplanets directly across the aforementioned star: HR 8799b, c and d. Then, in 2010, reported the discovery of & # 39; fourth & # 39; planet, HR 8799 e.
Now, the study presented is based on data obtained in 2008. New observations with & # 39; direct images are & # 39; HR 8779 c, a small gas plant & # 39; about seven & # 39; times the mass of & # 39; Jupiter, the kolossus of our solar system, it takes 200 years in orbit its star.
Data obtained in & # 39; this opportunity, according to the authors, confirm the presence of & # 39; water in the atmosphere and also the failure & # 39; methane it.
Technology — —
To come to this conclusion, the researchers used a combination & # 39; two Keck telescopes technologies. The first is adaptive optics, which prohibits the diffuse effects of & # 39; the Earth's atmosphere. Second is spectrometer in Keck 2 telescope called the Cryogenic Infrared Ispettrugraf Near ECHELLES (NIRSPEC), spectrometer & # 39; working with high resolution & # 39; infrared light.
According to Dimitri MAWET, professor & # 39; Caltech and co-author & # 39; study, he explained:
"This type of & # 39; technology is exactly what we use in the future to look for signs of life on a planet similar to Earth. We have not ninsabux, but we are moving & # 39; forward."
Research — —
The new findings were published in the journal Journal Astronomy. The main author is Wang Ji, former Postdoctoral fellow Caltech and now assistant professor at Ohio State University.
S & # 39; now, the astronomisti fotografjaw b & # 39; direct way more than a dozen exoplanets. HR 8799 system is the first multi-planetary system which acquired images directly. But this is only the first step in & # 39; this study.
Once taken, the pictures can be analyzed for chemical composition of their atmospheres. This is where comes spectroscopy. F & # 39; in this case, the refined skills NIRSPEC were essential.
NIRSPEC is an instrument that works in the band The infrared. It's kind of & # 39; infrared light with & # 39; length & # 39; waves & # 39; about 3.5 micrometers and region & # 39; spectrum b & # 39; large detailed chemical implications.
"The band L has been overlooked previously because the sky is best f & # 39; this wavelength, if a foreign account in & # 39; eye f & # 39; harmony with the L band, see heaven extremely strong, it is difficult to see exoplanets through & # 39; this veil ", explains MAWET.
By combining the band with & # 39; adaptive optics could make more accurate measurements of the planet, and b & # 39; it confirmed the presence of & # 39; water and non-& # 39; methane.
With information from Universe Today and Busness Insider
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