AN INFRARED-ANALYSIS OF PUPPIS-A

被引:23
作者
ARENDT, RG [1 ]
DWEK, E [1 ]
PETRE, R [1 ]
机构
[1] NASA, GODDARD SPACE FLIGHT CTR, HIGH ENERGY ASTROPHYS LAB, GREENBELT, MD 20771 USA
关键词
INFRARED; SOURCES; INTERSTELLAR; GRAINS; NEBULAE; INDIVIDUAL; (PUPPIS-A); SUPERNOVA REMNANTS; RADIATION MECHANISMS;
D O I
10.1086/169712
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have completed a quantitative analysis of the infrared emission of the supernova remnant (SNR) Puppis A as seen by the Infrared Astronomical Satellite (IRAS). We estimate physical parameters of the remnant (and the surrounding interstellar medium), including density, mass, temperature, and age. The infrared spectrum of Puppis A is fit by models of thermal emission from interstellar dust grains which have been swept up into the SNR where they are collisionally heated by the shocked gas. We find evidence of an enhanced abundance of very small grains in the interstellar medium near Puppis A, and evidence of their destruction by the advancing blast wave.
引用
收藏
页码:474 / 485
页数:12
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