Three gas giants found

Three gas giants found

European astronomers have recorded three new foreign gas giants in the SuperWASP project. Two of them belong to the hot Saturns, and the third - the super-Neptune.

WASP is an international global search program for exoplanets using transit photometry. For this, two robotic observatories are involved: SuperWASP-North (Canary Islands) and SuperWASP-South (South Africa). They have eight wide-angle cameras, simultaneously tracking the sky on the planetary transit events. This allows you to explore millions of stars.

Recently managed to fix the signals from the three stars - WASP-151, WASP-153 and WASP-156. Later they used the SOPHIE spectrograph on a 1.93-meter telescope to confirm the planetary nature. The largest planet is WASP-153b. Its radius exceeds Jupiter by 1.55 times, and mass - 0.39. The orbital period lasts 3.33 days, and the temperature - 1701 K.

WASP-151b exceeds Jupiter by 13%, and weight - 0.31. It warms up to 1291 K, and the orbital period is 4.53 days.

The first two planets are low density gas giants. Revolve around G-type stars. Belong to the category of hot Saturn.

WASP-156b occupies half the size of Jupiter and 0.13 mass. Temperature index - 1291 K, and on the orbital route spends 3.83 days. It rotates around a K-type star and is ranked as super-Neptune.

Scientists believe that these are important findings that will help to understand the “Neptunian desert” - the depletion of exoplanets during short orbital periods.

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