η Carinae in the mid-infrared

被引：0
|
作者：
Polomski, E [1 ]
Telesco, C [1 ]
Piña, R [1 ]
机构：
[1] Univ Florida, Dept Astron, Gainesville, FL 32611 USA
来源：
ETA CARINAE AT THE MILLENNIUM | 1999年 / 179卷
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D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present high angular resolution (FWHM similar to 0." 9 - 1." 6) observations of complex mid-infrared (4.8 - 18.2 mu m) structure in the eta Carinae nebula. Our observations reveal several condensations within the inner Homunculus, as well as a toroidal structure visible at 18.2 mu m. We calculate optical depth and temperature maps of the nebula. Optical depth maps show bipolar symmetric lobes which may be the result of viewing an inclined disk. Finally, mid-IR SEDs of the central core and a NE companion reveal for the first time the spatial variation of the silicate feature within the nucleus of the eta Car nebula.
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页码：41 / 45
页数：5
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