Mid-infrared [Ne II] line emission from the nucleus of NGC 253

被引:29
作者
Boker, T
Krabbe, A
Storey, JWV
机构
[1] Space Telescope Sci Inst, Baltimore, MD 21218 USA
[2] DLR, Inst Space Sensor Technol, Berlin, Germany
[3] Max Planck Inst Extraterr Phys, D-85740 Garching, Germany
关键词
galaxies; individual; (NGC; 253); starburst; infrared; ISM; lines and bands;
D O I
10.1086/311326
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report on mid-infrared continuum and line emission mapping of the nucleus of NGC 253. The data, with a resolution of 1." 4, reveal a double-peaked arclike [Ne II] emission region. Comparison with published data shows that the [Ne Ir] are is centered on the nucleus of the galaxy. The brightest [Ne Ir] source coincides with the infrared continuum peak. The interpretation of these results is complicated by the edge-on orientation of NGC 253, but a self-consistent explanation is a star formation triggered by dynamical resonances in a barred potential.
引用
收藏
页码:L115 / +
页数:5
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