The gas temperature in circumstellar disks

被引：0

作者：

Jonkheid, BJ ^{[1
]}

van Zadelhoff, GJ ^{[1
]}

Faas, F ^{[1
]}

van Dishoeck, EF ^{[1
]}

机构：

[1] Leiden Observ, NL-2300 RA Leiden, Netherlands

来源：

CHEMISTRY AS A DIAGNOSTIC OF STAR FORMATION | 2003年

关键词：

ISM : molecules; circumstellar material; protoplanetary disks;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The gas temperature in circumstellar disks is calculated in a self-consistent way using a quasi-2-dimensional model. A simple chemical network is adopted to calculate the densities of species relevant to the heating and cooling processes of the gas, and special attention is given to the effects of gas-dust coupling on the temperature. This coupling has a noticeable effect, but is not strong enough to validate the assumption that the gas temperature equals the dust temperature throughout the disk. The difference is greatest in the upper layers of the disk, where T-gas exceeds T-dust by up to 50 K.

引用

页码：315 / 317

页数：3

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