European scientists managed to find 8 new exoplanets of the hot Jupiter type as part of the WASP-South study. Gas giants are endowed with short orbital periods, and the mass reaches 0.42-5.2 Jupiter.
The researchers identified transit signals in the light curves of 8 different extrasolar worlds. Planetary character confirmed by observations in TRAPPIST (Chile). They were assigned to the class of hot Jupiter, because according to their characteristics they resemble the largest planet of our system, and their orbital periods reach less than 10 days. Also, they are characterized by high surface temperatures and proximity to the star.
The most massive planet is WASP-162b with a Jupiter mass index of 5.2. Rotates around a star every 9.62 days at a distance of 0.09 a. e. The analysis shows that its temperature should be kept at around 910 K. The star’s age is more than 1 billion years old, and resembles the Sun in mass and size. WASP-168b with a mass of 0.42 Jupiter became the smallest in the group. Although the radius exceeds our giant by 50%. Because of this, it is considered a bloated “hot Jupiter”. The planet revolves around a F9V-type star, which is 10% larger and more massive than the Sun. Spends 4.15 days on the orbital path with a distance of 0.05 a. e. Temperature - 1340 K.
If we talk about the atmosphere, then the most promising seems WASP-172b. This is a bloated hot Jupiter (0.47 mass and 1.57 radii of Jupiter), circling around a star in 5.47 days at a distance of 0.07 am. e. But the atmospheric layer must warm up to 1740 K.
The remaining 5 exoplanets are designated as WASP-144b, WASP-145Ab, WASP-158b, WASP-159b and WASP-173Ab. Their mass reaches 0.44–3.7 masses of Jupiter, and along radii it is between 0.85 and 1.4 radii of Jupiter. WASP-145Ab and WASP-173Ab are located in dual systems.