Overview
- The Astronomy & Astrophysics paper confirms two Earth-size planets, TOI-2267b and TOI-2267c, with orbital periods of 2.28 and 3.49 days, and reports a third Earth-size candidate at 2.03 days.
- Researchers find that two planets transit one M-dwarf and the third transits its companion, marking the first known case of transiting planets around both members of a binary system.
- The host star for each confirmed planet remains ambiguous, yielding radius estimates that span roughly 1.0 to 1.36 Earth radii depending on the assigned host.
- Signals were extracted from NASA’s TESS observations using the team’s SHERLOCK software, with SPECULOOS and TRAPPIST providing rapid ground-based confirmations.
- TOI-2267 is a compact, cool M-dwarf pair separated by about 8 AU, and the team flags it as a key target for radial-velocity monitoring and future spectroscopy to determine masses and probe atmospheres.