10 citations · 17 across the 7 of their papers we have counts for
7 papers
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…
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…
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…
Secret of Longevity: Protoplanetary Disks as a Source of Gas in Debris Disks
Wataru Ooyama, Riouhei Nakatani, Takashi Hosokawa +2
While protoplanetary disks (PPDs) are generally thought to disperse within several million years, recent observations have revealed gas in their older counterparts, debris disks. T…
Stellar Wind Effect on the Atmospheric Escape of Hot Jupiters and their Ly- and H transits
Hiroto Mitani, Riouhei Nakatani, Naoki Yoshida
Atmospheric escape of close-in exoplanets can be driven by high energy radiation from the host star. The planetary outflows interacting with the stellar wind may generate observabl…
Atmospheric Escape of Close-in Giants around Hot Stars: Far-Ultraviolet Radiation and Photoelectric Heating Effect
Hiroto Mitani, Riouhei Nakatani, Naoki Yoshida
Atmospheric escape is an important process that controls the long-term evolution of close-in planets. We perform radiation hydrodynamics simulations of photo-evaporation of exoplan…
Spectral Energy Distribution of the First Galaxies: Contribution from Pre-Main-Sequence Stars
Hiroto Mitani, Naoki Yoshida, Kazuyuki Omukai +1
One of the major goals of next-generation space-borne and ground-based telescopes is to detect and characterize the first galaxies that were in place in the first few hundred milli…