With the help of instruments designed partly in Canada, a team of astronomers has discovered an exoplanet that could be completely covered in water. An international team of scientists has announced the discovery of TOI-1452 b, an exoplanet orbiting one of two small stars in a binary system locat
, which surveys the entire sky in search of planetary systems close to our own, that put the astronomers on the trail of this exoplanet. Based on thesignal, which showed a slight decrease in brightness every 11 days, scientists predicted a planet about 70% larger than Earth.
“The OMM played a crucial role in confirming the nature of this signal and estimating the planet’s radius,” explained Cadieux. “This was no routine check. We had to make sure the signal detected by TESS was really caused by an exoplanet circling TOI-1452, the largest of the two stars in that binary system.”
The team also includes Quebec researchers Farbod Jahandar and Thomas Vandal, two Ph.D. students at the Université de Montréal. Jahandar analyzed the host star’s composition, which is useful for constraining the planet’s internal structure, while Vandal was involved in analyzing the data collected with SPIRou.Although the exoplanet TOI-1452 b is probably rocky like Earth, its radius, mass, and density suggest a world very different from our own. Earth is essentially a very dry planet.
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