HIGH-RESOLUTION MIDINFRARED OBSERVATIONS OF NGC-7469

被引:37
作者
MILES, JW
HOUCK, JR
HAYWARD, TL
机构
[1] Ctr. for Radiophysics and Space Res., Cornell University, Ithaca
关键词
GALAXIES; INDIVIDUAL; (NGC-7469); NUCLEI; INFRARED;
D O I
10.1086/187305
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present a high-resolution 11.7 mum image of the starburst/Seyfert hybrid galaxy NGC 7469 using the Hale 5 m telescope at Palomar Observatory.1 Our map, with diffraction limited spatial resolution of 0''.6, shows a 3'' diameter ring of emission around an unresolved nucleus. The map is similar to the VLA 6 cm map of this galaxy made with 0''.4 resolution by Wilson et al. (1991). About half of the mid-infrared flux in our map emerges from the unresolved nucleus. We also present spatially resolved low resolution spectra that show that the 11.3 mum PAH feature comes from the circumnuclear ring but not from the nucleus of the galaxy.
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页码:L37 / &
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