Incorporating astrochemistry into molecular line modelling via emulation
Incorporating astrochemistry into molecular line modelling via emulation
复制标题
通过仿真将天体化学纳入分子线建模
DOI:
10.1051/0004-6361/201935973
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发表时间:
2019
影响因子:
6.5
通讯作者:
De Mijolla D
中科院分区:
文献类型:
--
作者:
De Mijolla D
In studies of the interstellar medium in galaxies, radiative transfer models of molecular emission are useful for relating molecular line observations back to the physical conditions of the gas they trace. However, doing this requires solving a highly degenerate inverse problem. In order to alleviate these degeneracies, the abundances derived from astrochemical models can be converted into column densities and fed into radiative transfer models. This ensures that the molecular gas composition used by the radiative transfer models is chemically realistic. However, because of the complexity and long running time of astrochemical models, it can be difficult to incorporate chemical models into the radiative transfer framework. In this paper, we introduce a statistical emulator of the UCLCHEM astrochemical model, built using neural networks. We then illustrate, through examples of parameter estimations, how such an emulator can be applied to real and synthetic observations.
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DOI:
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发表时间:
2011
期刊:
影响因子:
--
作者:
T. Grassi;E. Merlin;L. Piovan;U. Buonomo;C. Chiosi
通讯作者:
C. Chiosi
影响因子:
5.3
作者:
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通讯作者:
Priestley, F.
DOI:
10.3847/1538-4357/aaf72a
发表时间:
2019
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Harada Nanase;Nishimura Yuri;Watanabe Yoshimasa;Yamamoto Satoshi;Aikawa Yuri;Sakai Nami;Shimonishi Takashi
通讯作者:
Shimonishi Takashi
影响因子:
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作者:
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通讯作者:
van Dishoeck, Ewine F.
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
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通讯作者:
S. Viti