An MSX infrared analysis of the superbubble around the giant HII region NGC3603  

作　　者：WANG Jia & CHEN Yang Department of Astronomy,Nanjing University,Nanjing 210093,China 

出　　处：《Science China(Physics,Mechanics & Astronomy)》2010年第S1期271-273,共3页中国科学：物理学、力学、天文学（英文版）

基　　金：support by the National Basic Research Program of China (Grant No. 2009CB824800);the National Natural Science Foundation of China (Grant Nos. 10725312 and 10673003)

摘　　要：Using the MSX mid-infrared observations,we reveal a 100pc-scale superbubble surrounding the giant HII region NGC3603.We suggest that the diffuse surrounding infrared emission in bands A,C,and D is dominated by that of PAH and the emission in band E is dominated by that of dust grains.The fitted dust temperature is consistent with heating by the central cluster's UV photons.The derived gas-to-dust mass ratio for the bubble shell is of order 102.Using the MSX mid-infrared observations,we reveal a 100pc-scale superbubble surrounding the giant HII region NGC3603.We suggest that the diffuse surrounding infrared emission in bands A,C,and D is dominated by that of PAH and the emission in band E is dominated by that of dust grains.The fitted dust temperature is consistent with heating by the central cluster’s UV photons.The derived gas-to-dust mass ratio for the bubble shell is of order 102.

关 键 词：superbubble HII region CLUSTER PAH DUST 

分 类 号：P141.91[天文地球—天体物理]