# WASP-South hot Jupiters: WASP-178b, WASP-184b, WASP-185b & WASP-192b

## TL;DR

This paper reports the discovery of four new hot Jupiters by the WASP-South survey, highlighting their unique characteristics such as host star temperature, planetary inflation, and orbital properties, contributing to exoplanet diversity understanding.

## Contribution

The paper presents four newly discovered hot Jupiters with detailed characterization, including the second-hottest host star and ultra-hot Jupiter candidate, expanding knowledge of planetary and stellar properties.

## Key findings

- WASP-178b is one of the hottest transiting exoplanets known.
- WASP-185b has an eccentric orbit and a relatively long period.
- WASP-178b's large radius makes it ideal for studying ultra-hot Jupiters.

## Abstract

We report on four new transiting hot Jupiters discovered by the WASP-South survey. WASP-178b transits a V = 9.9, A1V star with Teff = 9350 +/- 150 K, the second-hottest transit host known. It has a highly bloated radius of 1.81 +/- 0.09 Rjup, in line with the known correlation between high irradiation and large size. With an estimated temperature of 2470 +/- 60 K, the planet is one of the best targets for studying ultra-hot Jupiters that is visible from the Southern hemisphere. The three host stars WASP-184, WASP-185 and WASP-192 are all post-main-sequence G0 stars of ages 4-8 Gyr. The larger stellar radii (1.3-1.7 Msun) mean that the transits are relatively shallow (0.7-0.9%) even though the planets have moderately inflated radii of 1.2-1.3 Rjup. WASP-185b has an eccentric orbit (e = 0.24) and a relatively long orbital period of 9.4 d. A star that is 4.6 arcsec from WASP-185 and 4.4 mag fainter might be physically associated.