224 citations · 3.9k across the 128 of their papers we have counts for
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Radial properties of dust in galaxies: Comparison between observations and isolated galaxy simulations
S. A. van der Giessen, K. Matsumoto, M. Relano +8
We study the importance of several processes that influence the evolution of dust and its grain size distribution on spatially resolved scales in nearby galaxies. Here, we compiled…
Evolution of grain size distribution in the circum-galactic medium
Hiroyuki Hirashita
In order to theoretically understand dust properties in the circum-galactic medium (CGM), we construct a dust evolution model that incorporates the evolution of grain size distribu…
Dust enrichment in the circum-galactic medium
Mau Otsuki, Hiroyuki Hirashita
To understand the origin of dust in the circum-galactic medium (CGM), we develop a dust enrichment model. We describe each of the central galaxy and its CGM as a single zone, and c…
Observational signatures of the dust size evolution in isolated galaxy simulations
Kosei Matsumoto, Hiroyuki Hirashita, Kentaro Nagamine +9
We aim to provide observational signatures of the dust size evolution in the ISM. In particular, we explore indicators of the polycyclic aromatic hydrocarbon (PAH) mass fraction ($…
Submillimetre galaxies as laboratories for dust grain coagulation
Hiroyuki Hirashita, Chian-Chou Chen
Coagulation in the dense interstellar medium (ISM) is an important process that determines the size of the largest grains. We use submillimetre galaxies (SMGs) as laboratories of g…
Effects of dust grain size distribution on the abundances of CO and H in galaxy evolution
Hiroyuki Hirashita
We model the effect of grain size distribution in a galaxy on the evolution of CO and H abundances. The formation and dissociation of CO and H in typical dense clouds are m…
Kpc-scale properties of dust temperature in terms of dust mass and star formation activity
I-Da Chiang, Hiroyuki Hirashita, Jeremy Chastenet +7
We investigate how the dust temperature is affected by local environmental quantities, especially dust surface density (), dust-to-gas ratio (D/G) and interstellar…
Effects of dust sources on dust attenuation properties in IllustrisTNG galaxies at
Yuan-Ming Hsu, Hiroyuki Hirashita, Yen-Hsing Lin +2
Dust emission from high-redshift galaxies gives us a clue to the origin and evolution of dust in the early Universe. Previous studies have shown that different sources of dust (ste…
Evolution of grain size distribution with enhanced abundance of small carbonaceous grains in galactic environments
Hiroyuki Hirashita
We propose an updated dust evolution model that focuses on the grain size distribution in a galaxy. We treat the galaxy as a one-zone object and include five main processes (stella…
Cosmic evolution of grain size distribution in galaxies using the GC semi-analytic model
Ryu Makiya, Hiroyuki Hirashita
We investigate the cosmological evolution of interstellar dust with a semi-analytical galaxy formation model (GC), focusing on the evolution of grain size distribution. The mo…
Compact dust emission in a gravitationally lensed massive quiescent galaxy at z = 2.15 revealed in ~130 pc-resolution observations by ALMA
Takahiro Morishita, Abdurro'uf, Hiroyuki Hirashita +3
We present new observations of MRG-M2129, a quiescent galaxy at z = 2.15 with the Atacama Large Millimeter/submillimeter Array (ALMA). With the combination of the gravitational len…
Analytic models of dust temperature in high-redshift galaxies
Hiroyuki Hirashita, I-Da Chiang
We investigate physical reasons for high dust temperatures ( K) observed in some high-redshift () galaxies using analytic models. We consider two mo…
Dust grain size evolution in local galaxies: a comparison between observations and simulations
M. Relano, I. De Looze, A. Saintonge +13
The evolution of the dust grain size distribution has been studied in recent years with great detail in cosmological hydrodynamical simulations taking into account all the channels…
Dissecting Nearby Galaxies with piXedfit: II. Spatially Resolved Scaling Relations Among Stars, Dust, and Gas
Abdurro'uf, Yen-Ting Lin, Hiroyuki Hirashita +5
We study spatially resolved scaling relations among stars, dust, and gas in ten nearby spiral galaxies. In a preceding paper Abdurro'uf et al. (2022), we have derived spatially res…
Dust SEDs in Milky Way-like galaxies in the IllustrisTNG simulations based on the evolution of grain size distribution
Chiung-Yin Chang, Yu-Hsiu Huang, Hiroyuki Hirashita +1
To understand how the evolution of grain size distribution in galaxies affects observed dust properties, we apply a post-processing dust evolution model to galaxy merger trees from…
The co-evolution of molecular hydrogen and the grain size distribution in an isolated galaxy
Leonard E. C. Romano, Kentaro Nagamine, Hiroyuki Hirashita
Understanding the evolution of dust and molecular hydrogen (H) is a critical aspect of galaxy evolution, as they affect star formation and the spectral energy distribution of g…
Dust diffusion in SPH simulations of an isolated galaxy
Leonard E. C. Romano, Kentaro Nagamine, Hiroyuki Hirashita
We compute the evolution of the grain size distribution (GSD) in a suite of numerical simulations of an isolated Milky-Way-like galaxy using the -body/smoothed-particle-hydrodyn…
Evolution of dust grain size distribution and grain porosity in galaxies
Hiroyuki Hirashita, Vladimir B. Il'in
The radiative properties of interstellar dust are affected not only by the grain size distribution but also by the grain porosity. We develop a model for the evolution of size-depe…
A simple numerical experiment on the dust temperature bias for Lyman break galaxies at
Yung Ying Chen, Hiroyuki Hirashita, Wei-Hao Wang +1
Some studies suggest that the dust temperatures () in high-redshift () Lyman break galaxies (LBGs) are high. However, possible observational bias in $T_\m…
Dissecting Nearby Galaxies with piXedfit: I. Spatially Resolved Properties of Stars, Dust, and Gas as Revealed by Panchromatic SED Fitting
Abdurro'uf, Yen-Ting Lin, Hiroyuki Hirashita +5
We study spatially resolved properties (on spatial scales of kpc out to at least effective radii) of the stars, dust, and gas in ten nearby spiral galaxies. The prop…
Geometry effects on dust attenuation curves with different grain sources at high redshift
Yen-Hsing Lin, Hiroyuki Hirashita, Peter Camps +1
Dust has been detected in high-redshift () galaxies but its origin is still being debated. Dust production in high-redshift galaxies could be dominated by stellar production o…
Shattering as a source of small grains in the circum-galactic medium
Hiroyuki Hirashita, Ting-Wen Lan
Observed reddening in the circum-galactic medium (CGM) indicates a significant abundance of small grains, of which the origin is still to be clarified. We examine a possible path o…
Evolution of dust porosity through coagulation and shattering in the interstellar medium
Hiroyuki Hirashita, Vladimir B. Il'in, Laurent Pagani +1
The properties of interstellar grains, such as grain size distribution and grain porosity, are affected by interstellar processing, in particular, coagulation and shattering, which…
Evolution of the grain size distribution in Milky Way-like galaxies in post-processed IllustrisTNG simulations
Yu-Hsiu Huang, Hiroyuki Hirashita, Yun-Hsin Hsu +3
We model dust evolution in Milky Way-like galaxies by post-processing the IllustrisTNG cosmological hydrodynamical simulations in order to predict dust-to-gas ratios and grain size…