https://phys.org/news/2022-08-planets-o ... -tess.html
by Tomasz Nowakowski , Phys.org
Using the Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered two new exoplanets orbiting a nearby star known as TOI-836. The newfound alien worlds were classified as a super-Earth and a mini-Neptune. The finding is reported in a paper published August 15 on arXiv.org.
TESS is conducting a survey of about 200,000 of the brightest stars near the sun with the aim of searching for transiting exoplanets. So far, it has identified over 5,800 candidate exoplanets (TESS Objects of Interest, or TOI), of which 233 have been confirmed so far.
Now, a team of astronomers led by Faith Hawthorn of the University of Warwick, U.K., confirms another two exoworlds monitored by TESS. They report that transit signals have been identified in the light curve of TOI-836 (or TIC 440887364)—a K-dwarf star located some 90 light years away. The planetary nature of these signals was confirmed by follow-up observations using ESA's CHaracterizing ExOPlanet Satellite (CHEOPS) and various ground-based facilities.