ESO Science Release | HARPS | 2017 Nov 15
ESO’s HARPS instrument finds Earth-mass exoplanet around Ross 128
[img3="The sky around the red dwarf star Ross 128A temperate Earth-sized planet has been discovered only 11 light-years from the Solar System by a team using ESO’s unique planet-hunting HARPS instrument. The new world has the designation Ross 128 b and is now the second-closest temperate planet to be detected after Proxima b. It is also the closest planet to be discovered orbiting an inactive red dwarf star, which may increase the likelihood that this planet could potentially sustain life. Ross 128 b will be a prime target for ESO’s Extremely Large Telescope, which will be able to search for biomarkers in the planet's atmosphere.
Credit: Digitized Sky Survey 2. Acknowledgement: Davide De Martin"]https://cdn.eso.org/images/screen/eso1736b.jpg[/img3][hr][/hr]
A team working with ESO’s High Accuracy Radial velocity Planet Searcher (HARPS) at the La Silla Observatory in Chile has found that the red dwarf star Ross 128 is orbited by a low-mass exoplanet every 9.9 days. This Earth-sized world is expected to be temperate, with a surface temperature that may also be close to that of the Earth. Ross 128 is the “quietest” nearby star to host such a temperate exoplanet. ...
Many red dwarf stars, including Proxima Centauri, are subject to flares that occasionally bathe their orbiting planets in deadly ultraviolet and X-ray radiation. However, it seems that Ross 128 is a much quieter star, and so its planets may be the closest known comfortable abode for possible life. ...
A Temperate Exo-Earth Around a Quiet M Dwarf at 3.4 Parsecs - X. Bonfils et al