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A new and simple approach to determine the abundance of hydrogen molecules on interstellar ice mantles
Hincelin, U.1; Chang, Q.2,3; Herbst, E.1
2015-02-01
Source PublicationASTRONOMY & ASTROPHYSICS
Volume574
AbstractContext. Water is usually the main component of ice mantles, which cover the cores of dust grains in cold portions of dense interstellar clouds. When molecular hydrogen is adsorbed onto an icy mantle through physisorption, a common assumption in gas-grain rate-quation models is to use an adsorption energy for molecular hydrogen on a pure water substrate. However, at high density and low temperature, when H-2 is efficiently adsorbed onto the mantle, its surface abundance can be strongly overestimated if this assumption is still used. Unfortunately, the more detailed microscopic Monte Carlo treatment cannot be used to study the abundance of H-2 in ice mantles if a full gas-grain network is utilized.
KeywordAstrochemistry Molecular Processes Methods: Numerical Ism: Molecules Ism: Abundances
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1051/0004-6361/201424807
WOS KeywordGAS-GRAIN CHEMISTRY ; SURFACE-CHEMISTRY ; MONTE-CARLO ; DARK CLOUDS ; CHEMICAL-MODELS ; H-2 FORMATION ; ASTRONOMICAL DETECTION ; STICKING PROBABILITY ; ORGANIC-MOLECULES ; O-2 ABUNDANCE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000349467000024
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15766
Collection毫米波和亚毫米波技术实验室
Affiliation1.Univ Virginia, Dept Chem, Charlottesville, VA 22904 USA
2.Chinese Acad Sci, XinJiang Astron Observ, Urumqi 830011, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Hincelin, U.,Chang, Q.,Herbst, E.. A new and simple approach to determine the abundance of hydrogen molecules on interstellar ice mantles[J]. ASTRONOMY & ASTROPHYSICS,2015,574.
APA Hincelin, U.,Chang, Q.,&Herbst, E..(2015).A new and simple approach to determine the abundance of hydrogen molecules on interstellar ice mantles.ASTRONOMY & ASTROPHYSICS,574.
MLA Hincelin, U.,et al."A new and simple approach to determine the abundance of hydrogen molecules on interstellar ice mantles".ASTRONOMY & ASTROPHYSICS 574(2015).
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