Astronomers found this planet using the radial velocity method, so even though it's close, the JWST can't study its atmosphere. Too bad.
A team of astronomers from the Max Planck Institute for Astronomy think they’ve found a planet orbiting a red dwarf that might be an exception to the rule. Even though the planet is tidally locked, researchers think it could remain habitable across its dayside. They also think the planet is a good candidate to search for biosignatures on.The CARMENES search for exoplanets around M dwarfs. Wolf 1069 b: Earth-mass planet in the habitable zone of a nearby, very low-mass star.
Since Wolf 1069 is so much smaller and less energetic than a star like our Sun, its habitable zone is much closer. If Wolf 1069 b were orbiting our Sun at the same distance it orbits the red dwarf, it would be fried to a crisp. So even though Wolf 1069 b is so close to its star, the planet receives less energy than Earth does from the Sun, only about 65%. “As a result, the so-called habitable zone is shifted inwards,” said Kossakowski.
CARMENES excels at finding low-mass planets around low-mass stars because it uses radial velocity rather than the transit method. “The CARMENES survey is thus providing a comprehensive overview of planetary systems around nearby northern M dwarfs,” the CARMENES website explains. “By reaching into the realm of Earth-like planets, it provides a treasure trove for follow-up studies probing their habitability.
This figure shows the projected temperature across Wolf 1069 b’s dayside in Kelvin if it has an Earth-like atmosphere. Image Credit: KossakowskiProxima Centauri is the nearest star system to Earth, and it was big news when astronomers detected exoplanets there. Proxima Centauri b was discovered in 2016. It’s just a little more massive than Earth and orbits the red dwarf in its habitable zone. But Proxima Centauri is a flare star, and that could mean the habitable zone is not habitable at all.
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