Using NASA’s TESS satellite, an international team of astronomers has discovered nine new hot Jupiters. One of the newly discovered exoplanets has almost four times the mass of Jupiter. The findings were published in an article published on January 11 on the preprint server arXiv. A team of astronomers led by Jack Schulte of Michigan State University confirmed the existence of nine planets observed by TESS. Scientists report that transit signals were detected in the light curves of nine distant stars. The planetary nature of these signals was later confirmed by ground-based studies and spectroscopic observations. Discovered named TOI-1855 b, TOI-2107 b, TOI-2368 b, TOI-3321 b, TOI-3894 b, TOI-3919 b, TOI-4153 b, TOI-5232 b, TOI-5301 b The exoplanet is similar in size to Jupiter, but has a mass between 0.55 and 3.88 of Jupiter’s mass. TOI-3919 b is the most massive of them, and the largest is his TOI-1855 b, whose radius is about 1.65 times the radius of Jupiter. All of the newly discovered planets have orbital periods of less than 8 days and estimated equilibrium temperatures between 1000 and 1772 K. The hottest of the nine exoplanets was TOI-5232 K.

All of the newly discovered planets have orbital periods of less than 8 days and estimated equilibrium temperatures between 1000 and 1772 K. The hottest of the nine exoplanets was TOI-5232 K. The research team classified the discovered exoplanet as a hot Jupiter. These planets have similar properties to Jupiter, but their orbital period is less than 10 days. Because it is so close to its parent star, its surface temperature is high. TOI-3919 b and TOI-5301 b were found to have significant orbital eccentricities of 0.26 and 0.33, respectively. According to the authors of the study, this suggests that it may have undergone highly eccentric tidal movement. The radius of the parent star of the discovered planet is between 0.84 and 2.19 solar radii, and its mass is between 0.9 and 1.57 solar masses. The two oldest of her stars are estimated to be around 8 billion years old. The star is located between 576 and 1985 light years from us.

source: https://arxiv.org/abs/2401.05923