Near-infrared adaptive optics imaging of nuclear spiral structure in the Seyfert galaxy NGC 3227

被引：8
|
作者：
Chapman, SC
Morris, SL
Walker, GAH
机构：
[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada
[2] Dominion Astrophys Observ, Victoria, BC V8X 4M6, Canada
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2000年 / 319卷 / 03期
关键词：
techniques : image processing; galaxies : active; galaxies : individual : NGC; 3227; galaxies : Seyfert; galaxies : starburst; infrared : galaxies;
D O I：
10.1046/j.1365-8711.2000.03867.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present high spatial resolution, near-infrared images in J, H and K of the nucleus of NGC 3227, obtained with the Adaptive Optics Bonnette on the Canada-France-Hawaii Telescope. The similar to0.15 arcsec (17 pc) resolution allows structures to be probed in the core region. Dust obscuration becomes significantly less pronounced at longer wavelengths, revealing the true geometry of the core region. We are able to identify two main features in our maps: (i) a spiralling association of knots with a counterpart in a Hubble Space Telescope F606W image; and (ii) a smaller-scale annulus, orthogonal to the spiral of knots. These features may provide a means to transport material inwards to fuel the active nucleus.
引用
收藏
页码：666 / 676
页数：11
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