Using the latest technology, Keck Observatory has a group of astronomers revealed the water in the exoplanet atmosphere We have 179 light years. About this HR 8799 c, Is a solar system that has been transformed into HR 8799.
In 2008, scientists used Keck and twin telescopes to detect the three exoplanets around the above star: HR 8799b, c and d. Then, in 2010, they announced the opening of the fourth planet, HR 8799 e.
The study currently based on data from 2008. New observations with direct images are equal to HR 8779 c, the mass of the planet Jupiter approximately seven times, ie the colossium of the solar system turns into orbit at the star of 200 years.
Data obtained from this opportunity, in the opinion of the authors, show that water is present in the atmosphere as well absence of methane where
— Technology —
To reach this conclusion, researchers a Combination of two Keck telescopic technology. The first one is adaptive optics that counteract the diffusion of the Earth's atmosphere. The second is the spectrometer of the Echelle Near Keck 2 telescope near the infrared high-resolution spectrometer, infrared cryogenic spectrograph (NIRSPEC).
According to Dimitri Maut, a Calcutta professor and researcher, he explains:
"This type of technology is something that we want to use in the future to look for life-like signs on a planet-like planet. We are still missing and moving forward.
— Research –
New finds published in the journal Astronomical magazine. The first author is a former doctor at Calica, now associate professor of Ohio State University Ji Wang.
So far, astronomers have photographed more than a dozen of exoplanets. The HR 8799 system is the first multi-planetary system directly captured by these images. But this is just the first step in the study.
After removal, you can analyze the pictures for their chemical composition in their atmosphere. Here spectroscopy appears. In this case, the NIRSPEC improved skills were important.
NIRSPEC is an infrared L-band. It is a spectrum zone with a wavelength of about 3.5 micrometers of infrared light and a wide range of chemical traces.
"The L-range has been obscured by the fact that the sky shines with the wavelength, and if you look at the L-range, you will see a very bright sky, which makes it difficult to see exoplanets," says Mavet.
Combining the group with adaptive optics, they were able to make the most accurate measurements of the planet, thereby confirming the presence of water and absence of methane.
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