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astro-ph.EP2026
Thermochemical constraints on a primordial-origin of gas-rich debris disks
H. Mitani, W. Ooyama, R. Nakatani +2
Recent observations have revealed gas-rich debris disks around intermediate-mass stars at ages of tens of Myr. The origin of this gas remains unclear: it may be primordial, retaine…
astro-ph.EP2026
Analytical modeling of helium absorption signals of isothermal atmospheric escape
Hiroto Mitani, Rolf Kuiper
Atmospheric escape driven by extreme ultraviolet (EUV) radiation is a critical process shaping the evolution of close-in exoplanets. Recent observations have detected helium triple…
astro-ph.EP2025★ 1 cited
Physically motivated analytic model of energy efficiency for EUV-driven atmospheric escape of close-in exoplanets
Hiroto Mitani, Riouhei Nakatani, Rolf Kuiper
Extreme Ultraviolet (EUV) driven atmospheric escape is a key process in the atmospheric evolution of close-in exoplanets. In many evolutionary models, the energy-limited mass-loss…