TESS telescope discovers nine hot Jupiters

Thanks to the TESS space telescope, an international team of astronomers has discovered nine previously unknown gas giants. One of them is almost four times more massive than Jupiter.

Hot Jupiter in the artist’s image. Source: ESA/Hubble

The discovery was made during the analysis of data on changes in the light curves of nine stars caused by the transits of bodies orbiting them. It was subsequently confirmed by ground-based observations and spectroscopic observations.

All the discovered exoplanets are hot gas giants. Their circulation periods are less than eight days, and the equilibrium surface temperatures range from 730 °C to 1500 °C. Thus, they are classified as hot Jupiters.

As for the physical characteristics of the found exoplanets, their masses range from 0.55 to 3.88 Jupiter masses. The largest of them is 1.65 times larger than Jupiter. The orbits of the two exoplanets have a large eccentricity, which suggests that they have been subjected to tidal interactions. 

The stars orbiting the exoplanets are located at distances of 576-85 light-years from Earth. Their radii range from 0.84 to 2.19 solar, and their masses range from 0.9 to 1.57 solar masses. The age of the two oldest luminaries is estimated at about 8 billion years.

According to https://phys.org

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