Reclassification of Jovian Exoplanetary Objects as Fusion Hot Sub Dwarfs (FHSD)
Abstract
Analysis of confirmed Jovian exoplanetary objects reveals a subset exhibiting thermal signatures of internal heat exceeding heat received from host stars, yet possessing insufficient mass (< 13 MJ ) for sustained hydrogen fusion. Current classification schemes conflate these objects with gas giants despite fundamentally different thermodynamic states. This study proposes reclassification of such objects as Fusion Hot Sub Dwarfs (FHSD)—a distinct category from gas giants and brown dwarfs. We present a catalog of 22 objects meeting FHSD criteria, compiled from NASA Exoplanet Archive, ESO Science Archive, and Gaia DR3/DR4 data. There are many reclassifications still available, this represents the top candidates.
Fields of Study & Subjects
Stellar
planetary
and galactic studies
Astronomy and Astrophysical Research
Scientific Research and Discoveries
Publication details
- Journal / source
- Zenodo (CERN European Organization for Nuclear Research)
- Publication date
- 3 January 2026
- Language
- EN
- Document type
- Preprint