23 citations · 55 across the 6 of their papers we have counts for
6 papers
An Efficient Algorithm for Astrochemical Systems Using Stoichiometry Matrices
Kazutaka Motoyama, Ruben Krasnopolsky, Hsien Shang +2
Astrochemical simulations are a powerful tool for revealing chemical evolution in the interstellar medium. Astrochemical calculations require efficient processing of large matrices…
A Hydrochemical Hybrid Code for Astrophysical Problems. I. Code Verification and Benchmarks for Photon-Dominated Region (PDR)
Kazutaka Motoyama, Oscar Morata, Hsien Shang +2
A two dimensional hydrochemical hybrid code, KM2, is constructed to deal with astrophysical problems that would require coupled hydrodynamical and chemical evolution. The code assu…
Effective System for Simulating Dust Continuum Observations on Distributed Computing Resources
Kazutaka Motoyama, Yoshikazu Tanaka, Kento Aida +2
We present an effective system for simulating dust continuum observations by radiative transfer simulations. By using workflow management system RENKEI-WFT, we utilized distributed…
Effects of Magnetic Field and FUV Radiation on the Structures of Bright-rimmed Clouds
Kazutaka Motoyama, Tomofumi Umemoto, Hsien Shang +1
The bright-rimmed cloud SFO 22 was observed with the 45 m telescope of Nobeyama Radio Observatory in the ^{12}CO (J = 1-0), ^{13}CO (J = 1-0), and C^{18}O (J = 1-0) lines, where we…
A radiation driven implosion model for the enhanced luminosity of protostars near HII regions
K. Motoyama, T. Umemoto, H. Shang
Context. Molecular clouds near the H II regions tend to harbor more luminous protostars. Aims. Our aim in this paper is to investigate whether or not radiation-driven implosion mec…
High Accretion Rate during Class 0 Phase due to External Trigger
Kazutaka Motoyama, Tatsuo Yoshida
Recent observations indicate that some class 0 sources have orders of magnitude higher accretion rates than those of class I. We investigated the conditions for the high accretion…