Some share photos, some share videos, and some is just telling about the news…..
But you can read one at a time.
So here i tried a new way to collect and feature the news in terms of every paper but only at one place…..
“KELT-9 radiates so much ultraviolet radiation that it may completely evaporate the planet,” study co-leader Keivan Stassun, a professor of physics and astronomy at Vanderbilt University in Tennessee, said in the same statement. “Or, if gas giant planets like KELT-9b possess solid rocky cores as some theories suggest, the planet may be boiled down to a barren rock, like Mercury.”
“It’s a planet by any of the typical definitions based on mass, but its atmosphere is almost certainly unlike any other planet we’ve ever seen just because of the temperature of its day side,” Scott Gaudi, professor of astronomy at The Ohio State University and a leader of the study, said in a statement.
With scalding surface temperatures of a hellish 4,327°C, researchers have discovered the hottest planet ever found. The planet, named KELT-9b (artist’s impression right), is 650 light years away, and so close to its host star (artist’s impression left) its orbit takes just a day and a half.
The exoplanet is a ‘hot Jupiter’ – a gas giant that orbits its star closer than Mercury does the sun (artist’s impression pictured)
Due to the nature of the planet’s orbit, only one face receives the ultraviolet blast, while the other side remains in darkness. The star-facing side of the planet is constantly exposed to radiation, making it exceptionally hot but also putting it at risk of evaporating away.
An animation showing the pole-to-pole orbital path of KELT-9b. Normally, planets orbit a star’s equator, which causes blips to occur in the red end and the blue end of the star’s color spectrum from the scientists’ point of view. (bottom) In this case, researchers saw a blip only in the middle of the color spectrum, shown in the spectral line. Studying this middle blip revealed the exoplanet’s unusual orbit. Credit: Marshall C. Johnson
Astronomers don’t expect it to be too difficult to obtain detailed observations of the atmosphere of KELT-9b. Currently, ground-based telescopes and the Spitzer and the Hubble space telescopes are all capable of studying the planet’s atmosphere. While Spitzer observes in the infrared wavelength, primarily detecting heat, Hubble peers through the near-infrared to the near-ultraviolet (including the visible) parts of the spectrum. When the James Webb Space Telescope launches next year, it will be able to study the planet’s atmosphere in even better detail in the mid infrared to visible spectrum.
With a day-side temperature peaking at 4,326 degree Celsius the newly discovered exoplanet, designated KELT-9b, is hotter than most stars and only 926 degree Celsius cooler than our Sun.
Sky and Telescope
The planet is also in a highly inclined polar orbit with respect to the star. Astronomers measured the rotation and orientation of the star using a technique known as Doppler tomography, looking for spectral lines that shift to the blue side of the spectrum as one limb of the rotating star approaches us and to the red as the other limb recedes. KELT-9b and its host star (which also goes by the moniker HD 195689) are located in the sky at right ascension 20h32m 36s, declination +39° 56′ 20″ in the constellation Cygnus.
Despite the planet being completely uninhabitable its scorching skies shed fresh light on the atmospheres of alien worlds.
While missions such as NASA’s Transiting Exoplanet Survey Satellite are designed to find habitable places in other solar systems, there is a good reason to also study ones unliveable in the extreme.
The study was largely funded by the National Science Foundation (NSF) through an NSF CAREER Grant, NSF PAARE Grant and an NSF Graduate Research Fellowship. Additional support came from NASA via the Jet Propulsion Laboratory and the Exoplanet Exploration Program; the Harvard Future Faculty Leaders Postdoctoral Fellowship; Theodore Dunham, Jr., Grant from the Fund for Astronomical Research; and the Japan Society for the Promotion of Science.