Infrared emission of M17
Infrared emission of M17
复制标题
M17的红外发射
DOI：
10.1086/154256
复制
发表时间：
1976
期刊：
影响因子：
--
通讯作者：
H. Thronson
中科院分区：
文献类型：
--
作者：
D. Harper;F. Low;G. Rieke;H. Thronson
大部分红外光度是在电离区域内或非常接近电离区域产生的，尽管光源在 100 ..mu 处比在更短波长处延伸得更多。大光束 12 和 21..mu.. 扫描表明，实际上这些波长的所有通量都已在具有更高角分辨率的先前地图中检测到。先前工作中提到的极宽红外光谱被证明是以表面亮度峰值位置为中心的 2'.3 直径区域以及整个光源的特征。这些数据不支持先前提出的排放区域模型的详细预测。有人认为，星云的光谱、空间结构和演化可能受到令人兴奋的恒星形成时存在的密度空间变化的强烈影响。 (AIP)
Most of the infrared luminosity is generated within or very close to the ionized region, although the source is more extended at 100 ..mu.. than at shorter wavelengths. The large-beam 12 and 21 ..mu.. scans show that virtually all of the flux at those wavelengths has been detected in previous maps having higher angular resolution. The extremely broad infrared spectrum noted in previous work is shown to be characteristic of a 2'.3 diameter region centered on the position of peak surface brightness as well as the entire source. The data do not support the detailed predictions of previously proposed models for the emitting regions. It is argued that the spectrum, spatial structure, and evolution of the nebula may be strongly influenced by spatial variations in density which were present when the exciting stars were formed. (AIP)