Tomasz Nowakowski is a member of the physics.org community.
Two new "super- Earth" exoplanets were discovered by an international team of astronomer. The new alien worlds are smaller than the Earth. A finding has been published.
"Super-earths" are planets that are larger than Earth but smaller than Neptune. Astronomers use the term "super-Earth" to describe planets larger than Earth but smaller than the mini-Neptunes.
Two new planets have been discovered by the University of Lige. They used NASA's TESS to observe a nearby dwarf star. The inner planet was discovered by this. The detection of a second transiting planet was made possible by follow-up observations of this system with theSPECULOOS.
The researchers wrote that they presented the discovery and initial characterization of the system.
The mass of LP 890-9 b is estimated to be less than 13 Earth mass. The planet travels at a distance of less than 1AU from its host. The equilibrium temperature was found to be 386 K.
It was assumed that the mass of LP 890-9 c was less than 25.3 Earth tons. The exoplanet is separated from its parent star by a small amount of light. The planet's temperature is thought to be at a level of 272 K.
The mass of the host star is 0.12 solar mass. The effective temperature of this M dwarf is 2,871 K and it has a luminosity of zero. The star is very far away from the earth.
The astronomer said that their discovery made it the second-coolest star to host planets after TRAPPIST-1. LP 890-9 c is the second most favorable planet to date.
The authors of the paper concluded that the discovery of the remarkableLP 890-9 system presented in this work offered another rare opportunity to study the planets around our smallest and cooler neighbors.
More information: L. Delrez et al, Two temperate super-Earths transiting a nearby late-type M dwarf, Astronomy & Astrophysics (2022). DOI: 10.1051/0004-6361/202244041 Journal information: Astronomy & AstrophysicsThere is a science network.
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