ar X iv : a st ro - p h / 98 03 10 8 v 1 1 0 M ar 1 99 8 Mid - infrared [ NeII ] line emission from the nucleus of NGC 253
نویسنده
چکیده
We report on mid-infrared (MIR) continuum and line emission mapping of the nucleus of NGC 253. The data, with a resolution of 1.4, reveal a double-peaked arc-like [NeII] emission region. Comparison with published data shows that the [NeII] arc is centered on the nucleus of the galaxy. The brightest [NeII] 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 starformation triggered by dynamical resonances in a barred potential. Subject headings: infrared: ISM: lines and bands — galaxies: starburst — galaxies: individual (NGC 253)
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تاریخ انتشار 1998