From the 1 of 8 linked papers with an AI index.
8 papers
The majority of hot Jupiters formed beyond the water ice line
Yaxing He, Bertram Bitsch, Adrien Houge +2
The paper uses planet formation simulations to show that the atmospheric compositions of hot Jupiters suggest most of them formed beyond the water ice line and later migrated inwar…
A universal brown dwarf desert formed between planets and stars
Kaiming Cui, Guang-Yao Xiao, Fabo Feng +10
Giant planets and brown dwarfs play a crucial role in star and planet formation, as they are situated at the boundary between planets and stars with uncertain formation mechanisms.…
Long-Term Evolution of Close-in Sub-Neptunes and Outer Planetary Embryos: Atmospheric Mass Loss and Origin of Planets Inside and Outside the Radius Gap
Yaxing He, Masahiro Ogihara, Kangrou Guo
As a byproduct of sub-Neptune formation, planetary embryos with high eccentricity can remain in outer orbits, near 1 au from the star. In this work, we investigate the long-term ev…
Formation and disruption of resonant chains of super-Earths: Secular perturbations from outer eccentric embryos
Masahiro Ogihara, Masanobu Kunitomo
Recent observations have revealed the distribution of orbital period ratios of adjacent planets in multiple super-Earth systems and how these distributions change with time. The ai…
Formation of Free-Floating Planets via Ejection: Population Synthesis with a Realistic IMF and Comparison to Microlensing Observations
Kangrou Guo, Shigeru Ida, Masahiro Ogihara
Microlensing observations suggest that the mass distribution of free-floating planets (FFPs) follows a declining power-law with increasing mass. The origin of such distribution is…
Direct Imaging Explorations for Companions from the Subaru/IRD Strategic Program II; Discovery of a Brown-dwarf Companion around a Nearby mid-M~dwarf LSPM~J1446+4633
Taichi Uyama, Masayuki Kuzuhara, Charles Beichman +35
We report the discovery of a new directly-imaged brown dwarf companion with Keck/NIRC2+pyWFS around a nearby mid-type M~dwarf LSPM~J1446+4633 (hereafter J1446). The -band contr…