The molecular cloud near the hard x-ray source 1E 1740.7-2942

被引：20

作者：

Yan, M

Dalgarno, A

机构：

[1] Harvard-Smithsonian Center for Astrophysics, Cambridge

来源：

ASTROPHYSICAL JOURNAL | 1997年 / 481卷 / 01期

关键词：

ISM; clouds; molecules; molecular processes; radiative transfer; X-rays; stars;

D O I：

10.1086/304034

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We carry out calculations of the influence of the hard X-ray source 1E 1740.7-2942 on the dense molecular cloud in which it may be embedded. From the thermal, chemical, and ionization structure, we obtain the spatial distribution of the HCO+ 1-0 emission line. It matches the interferometric observations of the line well and supports the view of Phillips & Lazio that the source lies within the cloud near to its eastern edge. The intensity profiles of the 3-2 and 4-3 transitions of HCO+ are given. Their observation would provide further information on the location of the source. The abundances and spatial distribution of other molecular species are predicted.

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页码：296 / 301

页数：6

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