48 citations · 211 across the 17 of their papers we have counts for
17 papers · 1 filter
Dust in Galaxies at : Attenuation and Re-emission Predictions from the FirstLight Simulations
Yurina Nakazato, Akio K. Inoue, Rachel S. Somerville +3
Dust masses and grain properties in galaxies remain poorly constrained, as JWST UV attenuation and ALMA dust re-emission are rarely modelled consistently. We perform post-pr…
CROCODILE-SIDM: Tidal Formation of Dark Matter-Deficient Galaxies as a Test Case
Kenji Kihara, Kentaro Nagamine, Lissandre Bourrat +3
We introduce CROCODILE-SIDM, a framework for treating self-interacting dark matter (SIDM) with the -body part of GADGET4-Osaka code, as part of CROCODILE simulation family. As a…
Grain-size evolution and rapid dust growth in high-redshift galaxies
Daisuke Toyouchi, Andrea Ferrara, Yurina Nakazato +3
We present a galaxy evolution model that incorporates grain-size evolution in a multiphase interstellar medium (ISM) to investigate dust attenuation in galaxies at . Our…
Clump-Scale Dust Attenuation in Epoch of Reionization Galaxies: Spatially Resolved Properties from FirstLight Simulations
Yurina Nakazato, Kosei Matsumoto, Akio K. Inoue +3
Understanding dust attenuation in galaxies at both integrated and spatially resolved scales is fundamental for accurately determining the physical properties of galaxies. Recent hi…
CROCODILE-DWARF: Assembly and Kinematics of Field Dwarf Galaxies with GADGET4-OSAKA
Kazuki Tomaru, Yuri Oku, Daisuke Toyouchi +1
We present results from CROCODILE-DWARF, a new suite of cosmological zoom-in hydrodynamic simulations of isolated field dwarf galaxies with halo masses of at…
Bridging Theory and Observations: Insights into Star Formation Efficiency and Dust Attenuation in Galaxies
Daisuke Toyouchi, Hidenobu Yajima, Andrea Ferrara +1
We investigate early galaxy evolution by modeling self-consistently their radially-resolved evolution of gas, stars, heavy elements, and dust content. Our model successfully reprod…
The Assembly of Black Hole Mass and Luminosity Functions of High-redshift Quasars via Multiple Accretion Episodes
Wenxiu Li, Kohei Inayoshi, Masafusa Onoue +1
The early evolution of the quasar luminosity function (QLF) and black hole mass function (BHMF) encodes key information on the physics determining the radiative and accretion proce…
Radiative feedback on supermassive star formation: the massive end of the Population III initial mass function
Daisuke Toyouchi, Kohei Inayoshi, Wenxiu Li +2
Supermassive stars (SMSs) with masses of -- are invoked as possible seeds of high-redshift supermassive black holes, but it remains under de…
Top-heavy stellar mass distribution in galactic nuclei inferred from the universally high abundance ratio of [Fe/Mg]
Daisuke Toyouchi, Kohei Inayoshi, Miho N. Ishigaki +1
Recent observations of active galactic nuclei (AGNs) have shown a high Fe~II/Mg~II line-flux ratio in their broad-line regions, nearly independent of redshift up to .…
Rapid growth of seed black holes during early bulge formation
Kohei Inayoshi, Riouhei Nakatani, Daisuke Toyouchi +3
We study the early growth of massive seed black holes (BHs) via accretion in protogalactic nuclei where the stellar bulge component is assembled, performing axisymmetric two-dimens…
Super-Eddington mass growth of intermediate-mass black holes embedded in dusty circumnuclear disks
Daisuke Toyouchi, Kohei Inayoshi, Takashi Hosokawa +1
We perform the first three-dimensional radiation hydrodynamical simulations that investigate the growth of intermediate-mass BHs (IMBHs) embedded in massive self-gravitating, dusty…
Gaseous dynamical friction under radiative feedback: do intermediate-mass black holes speed up or down?
Daisuke Toyouchi, Takashi Hosokawa, Kazuyuki Sugimura +1
Coalescence of intermediate-mass black holes (IMBHs) as a result of the migration toward galactic centers via dynamical friction may contribute to the formation of supermassive BHs…
Super-Eddington accretion of dusty gas onto seed black holes: metallicity-dependent efficiency of mass growth
Daisuke Toyouchi, Takashi Hosokawa, Kazuyuki Sugimura +2
The super-Eddington accretion onto intermediate seed BHs is a potential formation mode of supermassive black holes exceeding in the early universe. We here investiga…
Metallicity Distribution of Disk Stars and the Formation History of the Milky Way
Daisuke Toyouchi, Masashi Chiba
We investigate the formation history of the stellar disk component in the Milky Way (MW) based on our new chemical evolution model. Our model considers several fundamental baryonic…
Bimodal Distribution of Galactic Disk Stars on the [alpha/Fe]-[Fe/H] Plane as a Possible Evidence of Discontinuous Radial Migration History
Daisuke Toyouchi, Masashi Chiba
We investigate the role of radial migration history of stars in chemical evolution of a disk galaxy, in particular in understanding the origin of their bimodal distribution on the…
Gas Inflow and Outflow Histories in Disk Galaxies as Revealed from Observations of Distant Star-Forming Galaxies
Daisuke Toyouchi, Masashi Chiba
We investigate gas inflow and outflow histories in Milky Way-like disk galaxies, to get new insights into the baryonic processes in galaxy formation and evolution. For this purpose…
On the Chemical and Structural Evolution of the Galactic Disk
Daisuke Toyouchi, Masashi Chiba
We study the detailed properties of the radial metallicity gradient in the stellar disk of our Galaxy to constrain its chemical and structural evolution. For this purpose we select…