воскресенье, 14 июля 2013 г.

Hubble photographed the bright blue giant outside the solar system

Hubble Space Telescope photographed a bright blue gas giant HD 189733b in the constellation Vulpecula.

This is the first time scientists were able to determine the color of the planet outside the solar system.

"Now we can imagine this planet for what it actually looks like in orbit. Actually, painting the planet's atmosphere is extremely difficult to determine, even for bodies in the solar system. New observations helped us to solve this riddle for HD 189733b, and now we gradually make up a complete "picture" of this exotic world, "- said Frederic Pont of the University of Exeter in the UK.

Scientists led by Pontus unable to determine the color of the planet, making sure the color of the star as varied as HD 189733b "hiding" behind her drive.

Scientists have focused on the fact that the glow of this star system consists of two components - the direct radiation of the star itself, and the reflected light and their own planet.

Due to this the total radiation intensity should decrease when the giant planet "hiding" behind the star, and the range of its needs change. Thus, the difference between the spectra to determine the color of HD 189733b.

Tracing the rotation of the planet around the star, and to track changes in the spectrum, scientists have found that a hot Jupiter is seen in orbit bright blue like the Earth. However, researchers stress, such coloring is not attached planet water and silicate particles in the atmosphere scatter visible light in the blue part of the spectrum.



Комментариев нет:

Отправить комментарий