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Theoretical Research for Chemical Evolution of Molecular Abundance in Protoplanetary Disks

原行星盘分子丰度化学演化的理论研究

基本信息

批准号：
07640363
负责人：
MIYAMA Shoken
金额：
$ 1.34万
依托单位：
National Astronomical Observatory, Japan
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07640363/
关键词：
Formation of Planet Protoplanetary Disk Accretion Disk Molecular Abundance Chemical Evolution Comet Carbon Monoxide Radio Observation 星形成惑星形成一酸化酸素数値シミュレーション

项目摘要

The purpose of this research is to study the chemical condition and evolution of molecular abundance in protoplanetary disks. In the following the targets of our research are written.(1) Solving the reaction network of the molecules in the disk, we calculate the chemical evolution of molecular abundance. In that case, we include the effect of adsorption into and desorption from surface of dusts.(2) For the molecules with isotopes, we also calculate the bundance ratio of the molecule to same molecule with isotopes as a function of time. It will be compared with the result of observational data by radio telescopes.(3) The results are applied to the study of the formation process of Solar system.We have done numerical computations about chemical reaction networks to obtain the chemical evolution of molecular abundance in protoplanetary disks.(1) The results have been compared with observational data of radio telescope and we find good agreement between our results and observational data.(2) The abundance of each molecules and their isotopes were obtained as a function of time and radius from the central star.(3) we expected how we can observe the evolutional effect from radio telescopes.(4) The results were also compared with observational data of comets.

这项研究的目的是研究原行星盘中的化学状况和分子丰度的演化。下面写出我们的研究目标：(1)求解圆盘中分子的反应网络，计算分子丰度的化学演化。在这种情况下，我们包括灰尘表面吸附和解吸的影响。(2)对于具有同位素的分子，我们还计算了该分子与具有同位素的相同分子的邦度比作为时间的函数。 (3)将结果应用于太阳系形成过程的研究。我们对化学反应网络进行了数值计算，得到了原行星盘中分子丰度的化学演化。(1)将结果与射电望远镜的观测数据进行了比较，发现结果与观测数据吻合良好。(2) 每个分子及其同位素都是作为时间和距中心恒星半径的函数而获得的。（3）我们期望如何通过射电望远镜观察演化效应。（4）结果还与彗星的观测数据进行了比较。