Tomasz Nowakowski is a member of the physics.org community.
Two new exoplanets have been discovered by an international team of astronomer using the TESS satellite. The alien worlds were categorized as mini-Neptune and super-Earth. There is a paper on arXiv.org about the finding.
The aim of the survey is to find transiting exoplanets, which are planets outside the solar system. Over 5,800 candidate exoplanets have been identified and 233 have been confirmed.
Faith Hawthorn is an astronomer at the University of Warwick in the UK. A K-dwarf star located some 90 light years away has been reported as the location of transit signals. The signals were confirmed by follow-up observations using various ground based facilities.
The TOI-836 system and the discovery of its two planets were presented in the paper. Two sectors of TESS data from year 1 and year 3 are used to base our discovery, as well as five space-based observations and ground-based photometry from theNGTS.
The inner planet TOI-836 b is 4.5 times more massive than the Earth and has a density of over five grams per cm 3. Due to its parameters, TOI-836 b is a so-called "super- Earth."
Super-earths are larger than Earth but not as large as Neptune. The term "super-Earth" is only used to describe the mass of the planet, but it is also used to describe smaller planets.
The TOI-836 c is more massive than our planet. The density was determined to be 3.06 g/ cm 3. The planet is separated from the parent star by a small amount of time. It was thought to have an equilibrium temperature of 668 K.
The host TOI-836 is a K-dwarf about 33 percent smaller than the sun. It has an effective temperature of 4,552 K and a metallicity of -0.28
There may be a third non-transiting planet in the studied system, according to the astronomer.
There are no transits of a third planet within our current set of photometry data.
More information: Faith Hawthorn et al, TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf. arXiv:2208.07328v1 [astro-ph.EP], arxiv.org/abs/2208.07328There is a science network.
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