Newly-found planets on the edge of destruction
Three newly-discovered planets have been orbiting dangerously close to stars nearing the end of their lives.Out of the thousands of extrasolar planets found so far, these three gas giant planets first detected by the NASA TESS Mission, have some of the shortest-period orbits around subgiant or giant stars. One of the planets, TOI-2337b, will be consumed by its host star in less than 1 million years, sooner than any other currently known planet.
Grunblatt announced the discovery and confirmation of these planets -- TOI-2337b, TOI-4329b, and TOI-2669b -- at an American Astronomical Society press conference today; the study has been accepted for publication in theThe researchers estimate that the planets have masses between 0.5 and 1.7 times Jupiter's mass, and sizes that range from slightly smaller to more than 1.6 times the size of Jupiter.
"The Keck observations of these planetary systems are critical to understanding their origins, helping reveal the fate of solar systems like our own," said UH IfA Astronomer Daniel Huber, who co-authored the study. The wide variety of planet densities found in the study suggests that these planetary systems have been shaped through chaotic planet-to-planet interactions. This could also have resulted in unpredictable heating rates and timescales for these planets, giving them the wide range in densities we observe today.
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