Dust Condensation of SiC, SiO in Asymptotic Giant Branch Stellar Winds-SiC Spectrum  

作　　者：Ruiqing Wu Chunhua Zhu Guoliang Lu Shuming Yang Zhisen Meng Xiaojiao Zhang Xizhen Lu Jinlong Yu Wujin Chen Mengqiu Long 

机构地区：[1]School of Physics and Electronics,Central South University,Changsha 410083,China [2]School of Physical Science and Technology,Xinjiang University,Urumqi 830046,China [3]School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China [4]School of Microelectronics and Physics,Hunan University of Technology and Business,Changsha 410205,China [5]College of Mechanical and Electronic Engineering,Tarim University,Alar 843300,China [6]School of Medicine,Xinjiang Medical University,Urumqi 830011,China

出　　处：《Research in Astronomy and Astrophysics》2024年第5期13-20,共8页天文和天体物理学研究（英文版）

基　　金：generous support of the Independent Innovation Project for Postgraduates of Central South University No.160171008;supported by the National Natural Science Foundation of China,and projects Nos.11803026,U2031204。

摘　　要：We have chosen the Large Scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) code to calculate the coalescence of silicon carbide (SiC),silicon oxide dust (SiO) in the AGB stellar wind.LAMMPS is a classica molecular dynamics simulation code.At the same time,we consider the effect of temperature on the evolution of molecular dynamics.We also calculated the temperature change of non-spherical SiC,SiO dust coalescence.The condensation temperature range of SiC dust in the AGB stellar wind is[300–500]k and[900–1100]k for SiO Finally,the infrared spectrum of SiC was calculated using Gaussian 16 software.The 77SiC,70Si_(3)C_(3),and 121Si_(3)C_(3) models have clear characteristic peaks of infrared spectra responding at 5,8.6,11.3,15,19,and 37μm.

关 键 词：STARS AGB and post-AGB infrared ISM-(ISM:)dust-extinction 

分 类 号：P144[天文地球—天体物理]