在Haalpa光中发现的已知星系SNRs目录
Catalogue of known Galactic SNRs uncovered in HAalpa light
摘要：
在英澳天文台/联合王国施密特望远镜对新的银河系超新星遗迹进行详细搜索期间，（AAO/UKST）对南银河平面的HAlpha调查，我们还首次发现，在大约24个已知的银河系SNRs附近，可能有相关的HAlpha发射，这些SNRs以前只从无线电或X射线中知道。由于该HAlpha勘测的1角秒分辨率和5瑞利灵敏度，检测到这些已知SNR的可能光学对应物。新发现的发射经常表现出其他光学探测到的SNR的典型特征形式，尽管有时HAlpha发射云或破碎的细丝主要在SNR内延伸到无线电边界。的确，在这些遗迹的区域中，一般弥漫和扩展的银河系发射的叠加是一个复杂的因素，但对于许多光学候选者来说，HAlpha发射提供了与观测到的射电发射的极好的形态和位置匹配，因此关联似乎很清楚。我们已经发表了HAlpha图像和几个已知SNR的最佳光学对应物的确认光谱观测，但为了完整性和方便，我们将它们包括在我们以前已知的无线电检测到的SNR的完整目录中，我们现在已经发现了HAlpha光学发射。为了更好地可视化这些微弱的超新星遗迹的光发射，并提高一些低表面亮度的功能，我们还提出了商图像的HAlpha数据除以伴随的宽带短红（SR）数据。在274个银河系SNRs中，目前在无线电中编目和检测到的只有20个以前有光学对应物。我们现在可能已经通过增加另外24个候选光学对应物而将其进一步增加了三分之一。
英文摘要：
During detailed searches for new Galactic supernova remnants (SNRs) in the Anglo Australian Observatory/United Kingdom Schmidt Telescope (AAO/UKST) HAlpha survey of the southern Galactic plane, we also uncovered, for the first time, possible associated HAlpha emission in the vicinity of about 24 known Galactic SNRs previously known solely from radio or X-ray observations.The possible optical counterparts to these known SNR were detected due to the 1 arcsecond resolution and 5 Rayleigh sensitivity of this HAlpha survey. The newly discovered emission frequently exhibits the typical filamentary form of other optically detected SNRs although sometimes the HAlpha emission clouds or fragmented filaments largely inside an SNR extend over the radio border. It is true that superposition of general diffuse and extended Galactic emission in the region of these remnants is a complicating factor, but for many optical candidates the HAlpha emission provides an excellent morphological and positional match to the observed radio emission so that an association seems clear. We have already published HAlpha images and confirmatory spectral observations for several of the best optical counterparts to known SNRs but for completeness and convenience we include them in our complete catalogue of previously known radio detected SNRs for which we have now uncovered HAlpha optical emission. For better visualisation of the optical emissions from these faint supernova remnants and to enhance some low surface-brightness features we also present quotient images of the HAlpha data divided by the accompanying broad-band short red (SR) data. Out of 274 Galactic SNRs currently catalogued and detected in the radio only ~20 had previous optical counterparts. We may have now increased this by a further third by adding a further 24 candidate optical counterparts.
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