Resolved mid-infrared emission in the narrow-line region of NGC 4151

被引：88

作者：

Radomski, JT ^{[1
]}

Piña, RK

Packham, C

Telesco, CM

De Buizer, JM

Fisher, RS

Robinson, A

机构：

[1] Univ Florida, Dept Astron, Gainesville, FL 32611 USA

[2] Natl Opt Astron Observ, Cerro Tololo Interamer Observ, La Serena, Chile

[3] Gemini Observ, No Operat Ctr, Hilo, HI 96720 USA

[4] Univ Hertfordshire, Dept Phys Sci, Hatfield AL10 9AB, Herts, England

来源：

ASTROPHYSICAL JOURNAL | 2003年 / 587卷 / 01期

关键词：

galaxies : individual (NGC 4151); galaxies : Seyfert; infrared : galaxies;

D O I：

10.1086/367612

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present subarcsecond-resolution mid-infrared images of NGC 4151 at 10.8 and 18.2 mum. These images were taken with the University of Florida mid-IR camera/spectrometer OSCIR at the Gemini North 8 m telescope. We resolve emission at both 10.8 and 18.2 mum, extending similar to3."5 across at a P.A. of similar to60degrees. This coincides with the narrow-line region of NGC 4151, as observed in [O III] by the Hubble Space Telescope. The most likely explanation for this extended mid-IR emission is dust in the narrow-line region heated by a central engine. We find no extended emission associated with the proposed torus and place an upper limit on its mid-IR size of less than or similar to35 pc.

引用

页码：117 / 122

页数：6

共 53 条

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