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Cross-correlation transmission spectroscopy of ultra-hot Jupiters WASP-189b, HAT-P-57b, KELT-17b, and KELT-21b with GIANO-B

Meni-Gallardo P., Orell-Miquel J., Fernández-Rodríguez G., Parviainen H. et al. • Astronomy & Astrophysics (2026)

Since the discovery of the first exoplanet, significant efforts have been made to characterise their atmospheres. Ultra-hot Jupiters (UHJs) are of particular interest due to their extended and hot atmospheres. Although previous studies have...

DOAJ Open Access (DOAJ) DOI: 10.1051/0004-6361/202557881

Where Do Hot Jupiters Come from? Revisiting Tidal Disruption and Ejection in High-eccentricity Migration

Qianli Fan, Shang-Fei Liu • The Astrophysical Journal Letters (2026)

The origin of hot Jupiters remains a key open question. In the high-eccentricity migration scenario, traditional coreless models predict a strict tidal exclusion zone within ∼2.7 tidal radii r _t , in which giant planets are either fully di...

DOAJ Open Access (DOAJ) DOI: 10.3847/2041-8213/ae6659