Astronomers have discovered a super-Earth planet orbiting a red dwarf star just 37 light-years from our solar system.
tea extrasolar planet Ross 508 b clears the so-called habitable zone of its parent star, the region where surface temperatures are just right to allow the presence of liquid water, a key component of life. The newly discovered exoplanet is about four times the mass of Earth, and was discovered using new infrared observation technology. This giant Earth’s proximity to our planet means it’s ripe for atmospheric investigation, which could help researchers determine if life could exist around a low mass. stars.
“It seems that the discovery of the first planet discovered in this new way so close to the habitable zone is too good to be true, and bodes well for future discoveries,” said team leader and Tokyo Institute of Technology professor Bonai Sato. in the current situation.
Related: These 10 Ultra Extreme Exoplanets are out of this world
Red dwarfs such as Ross 508, which has about one-fifth the mass of the Sun, are small stars that account for about three-quarters of all the stars in our galaxy, Milky Way. These stars are especially abundant in the region around our solar system, making red dwarf stars and their systems ideal targets for searching for planets outside our solar system. Solar System and investigation of possible life elsewhere in the universe.
The fact that red dwarfs are small in size means that they are cold, with temperatures between 2,000 and 3,500 K. The relatively low temperatures make them faint in visible light, unlike large stars, and this means that astronomers must study them in the infrared.
In order to do this, the Center for Astrobiology in Japan has developed an infrared observing instrument called the Infrared Doppler (IRD) instrument to mount on the Subaru Telescope in Hawaii. Using this instrument – the world’s first high-resolution infrared spectrometer for an 8-meter telescope – astronomers set out to search for signs of planets around red dwarf stars.
Specifically, the researchers looked for the “wobbles” caused by an exoplanet in the orbit of its parent star; The oscillation is recorded as a tiny shift in the wavelength of light from the star as it moves toward and away from a land.
The Ross 508 b discovery marks the first success of the project, which has been officially named the IRD Subaru Strategic Program (IRD-SSP).
“It’s been 14 years since the development of the IRD began,” Sato said. “We’ve continued our development and research in hopes of finding a planet just like Ross 508 b.”
Ross 508 b, the third planet to be found around such a low-mass star, has an average distance from its parent star of just one twenty-fold. The distance between the earth and the sun. The astronomers who discovered it believe that the planet’s highly elliptical orbit moves it into Ross 508’s habitable zone every 11 days.
“Ross 508b is the first successful discovery of a super-Earth using only near-infrared spectroscopy,” Subaru researcher Hiroki Harakawa said in the statement. “Before, in detecting low-mass planets such as super-Earths, near-infrared observations were not accurate enough, and verification by high-resolution measurements of line-of-sight velocity in visible light was essential.” (Although the super-terrestrial planets are larger than our own, Most of the outer planets Scientists are now discovering that it is much larger than that.)
Harakawa added that the study, of which he was the lead author, shows that even working alone IRD-SSP is capable of detecting planets. He said the work particularly demonstrates the advantage of the IRD-SSP in its ability to detect planets with high accuracy even around late-type red dwarfs that are too faint to be observed with visible light.
The team’s research was published June 30 in the journal Publication of the Japanese Astronomical Society (PASJ).
Follow us on twitter @Spacedotcom and on FB.
#SuperEarths #zip #habitable #zone #red #dwarf #star