57 citations · 112 across the 6 of their papers we have counts for
12 papers · 1 filter
Population III Star Formation in an X-ray background: II. Protostellar Discs, Multiplicity and Mass Function of the Stars
Jongwon Park, Massimo Ricotti, Kazuyuki Sugimura
Disc fragmentation plays an important role in determining the number of primordial stars (Pop III stars), their masses, and hence the initial mass function. In this second paper of…
Population III Star Formation in an X-ray background: I. Critical Halo Mass of Formation and Total Mass in Stars
Jongwon Park, Massimo Ricotti, Kazuyuki Sugimura
The first luminous objects forming in the universe produce radiation backgrounds in the FUV and X-ray bands that affect the formation of Population III stars. Using a grid of cosmo…
Magnetohydrodynamic effect on first star formation: prestellar core collapse and protostar formation
Kenji Eric Sadanari, Kazuyuki Omukai, Kazuyuki Sugimura +2
Recent theoretical studies have suggested that a magnetic field may play a crucial role in the first star formation in the universe. However, the influence of the magnetic field on…
Growth of Massive Disk and Early Disk Fragmentation in the Primordial Star Formation
Kazutaka Kimura, Takashi Hosokawa, Kazuyuki Sugimura
Recent high-resolution simulations demonstrate that disks around primordial protostars easily fragment in the accretion phase before the protostars accrete less than a solar mass.…
Disk fragmentation and intermittent accretion onto supermassive stars
Ryoki Matsukoba, Eduard I. Vorobyov, Kazuyuki Sugimura +3
Supermassive stars (SMSs) with are candidate objects for the origin of supermassive black holes observed at redshift >6. They are supposed to f…
Star cluster formation and cloud dispersal by radiative feedback: dependence on metallicity and compactness
Hajime Fukushima, Hidenobu Yajima, Kazuyuki Sugimura +3
We study star cluster formation in various environments with different metallicities and column densities by performing a suite of three-dimensional radiation hydrodynamics simulat…