S140红外源的近红外观测——成协气体的供热  

Near Infrared Observations of S140 IRS——Heating of Associated Gas

作　　者：吴月芳[1] 孙锦[2] 毛信杰[2] 李守中[1] 

机构地区：[1]北京大学地球物理系 [2]北京师范大学天文系

出　　处：《天体物理学报》1990年第3期227-234,共8页

基　　金：国家自然科学基金

摘　　要：对S140中的红外源用北京天文台1.26米红外望远镜进行了近红外测光,获得了J.H.K三个波段的流量值,并利用红外天文卫星及地面红外和亚毫米波观测资料作了光谱综合分析,得出光谱斜率、红外光度和红外源的壳层结构。 本文还结合CO及NH_3等观测结果分析了红外源成协气体的供热,除了通过尘埃的作用,中心源还可能通过激波对气体输入能量;我们还讨论了外部热源及光电过程和宇宙线的加热作用。Near infrared observations for S140IRS were made with the 1.26 m infrared telescope of Beijing Astronomical Observatory at Xinglong Station. Flux densities at J, H, K were obtained. We combined the data of IRAS and other infrared-submillimeter ground observations to make spectra analysis and calculate the slope, infrared luminosity and the parameters of the source shell structure.This work also analyses the heating mechanics of the associated gas. The energy transferred through collisions between dust grains and gas molecules is not sufficient to maintain the gas at the observed temperature. Shock waves may transfer some energy into the gas. External heating and electron-cosmic rays heating are also discussed.

关 键 词：红外源 成协气体 观测 供热 S140 

分 类 号：P155.22[天文地球—天文学]