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The Formation of Bimodal Dust Species in Nova Ejecta

文献类型：期刊论文

作者Duolikun, Adili3; Zhu, Chunhua2,3; Wang, Zhaojun2,3; Liu, Helei2,3; li, Lin2,3; Liu, Jinzhong1; Lu, Guoliang3
刊名PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
出版日期2019-12-01
卷号131期号:1006页码:124202
关键词binaries: close dust extinction novae cataclysmic variables
ISSN号0004-6280
DOI10.1088/1538-3873/ab45dd
产权排序3
英文摘要The formation of bimodal dust species (namely the silicate and amorphous carbon dust grains coexistent) in a nova eruption is an open problem. According to the nova model simulated by Modules for Experiments in Stellar Astrophysics code, we calculate the formation and growth of carbon (C) and forsterite (Mg2SiO4) dust grains purely in nova ejecta for the fee-expansion model and the radiative shock model by assuming spherical geometry of the nova ejecta. In these models, the chemical properties of pre-existing circumstellar medium are not taken into account. In the free-expansion model, the nova ejecta is not an idea environment for dust nucleation. However, it can efficiently produce dust in the radiative shock model. We estimate that every nova can produce C grains with an average mass of about 10(?9) and 10(?8)M, and Mg2SiO4 grains with an average mass of about 10(?8) and 10(?7)M. Based on the mass of ejected gas, the ratio of dust to gas is about 1%. The C grains form first after several or tens of days of nova eruption. After that, the Mg2SiO4 grains begin to grow in tens of days, which is consistent with observations.
WOS关键词GAMMA-RAY EMISSION ; CLASSICAL NOVAE ; INFRARED-EMISSION ; EVOLUTION ; NUCLEATION ; MODELS ; STARS ; ENVIRONMENTS ; ABUNDANCES ; GROWTH
资助项目National Natural Science Foundation of China[11763007] ; National Natural Science Foundation of China[11863005] ; National Natural Science Foundation of China[11803026] ; National Natural Science Foundation of China[11563008] ; National Natural Science Foundation of China[11473024] ; National Natural Science Foundation of China[11463005] ; National Natural Science Foundation of China[11503008] ; Tianshan Youth Project of Xinjiang[2017Q014]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000498574200001
出版者IOP PUBLISHING LTD
资助机构National Natural Science Foundation of China ; Tianshan Youth Project of Xinjiang
源URL[http://ir.xao.ac.cn/handle/45760611-7/3287]  
专题新疆天文台_光学天文与技术应用研究室
通讯作者Lu, Guoliang
作者单位1.Chinese Acad Sci, Xinjiang Observ, Natl Astron Observ, Urumqi 830011, Peoples R China
2.Xinjiang Univ, Ctr Theoret Phys, Urumqi 830046, Peoples R China
3.Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China
推荐引用方式
GB/T 7714		 Duolikun, Adili,Zhu, Chunhua,Wang, Zhaojun,et al. The Formation of Bimodal Dust Species in Nova Ejecta[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2019,131(1006):124202.
APA Duolikun, Adili.,Zhu, Chunhua.,Wang, Zhaojun.,Liu, Helei.,li, Lin.,...&Lu, Guoliang.(2019).The Formation of Bimodal Dust Species in Nova Ejecta.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,131(1006),124202.
MLA Duolikun, Adili,et al."The Formation of Bimodal Dust Species in Nova Ejecta".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 131.1006(2019):124202.

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来源：新疆天文台

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