SURVEY OF FORMALDEHYDE IN THE ORION DUST CLOUD L1641

被引：13

作者：

FEW, RW

BOOTH, RS

机构：

[1] University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire,SK11 9DL, United Kingdom

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1979年 / 188卷 / 01期

关键词：

Absorption lines - Dust clouds - Dynamic equilibrium - Line transitions - Molecular species - Orion Nebula;

D O I：

10.1093/mnras/188.1.181

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The distribution of formaldehyde in the Lynds cloud L1641, which lies to the south of the Orion nebula, has been mapped by observations of the 111-110 absorption line transition at a wavelength of 6 cm. Two large condensations are identified which are probably collapsing, but their molecular masses (~ 1.5 x 104A/☉) may be sufficient to maintain the system in dynamic equilibrium. The formaldehyde distribution is different from that observed for CO or OH but the formaldehyde correlates more closely with extinction and therefore appears to be a better tracer of dust in this region than the other two molecular species. © Royal Astronomical Society.

引用

页码：181 / 190

页数：10

共 16 条

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