论文标题
M83中超新星残留物的高分辨率光谱
High-Resolution Spectra of Supernova Remnants in M83
论文作者
论文摘要
为了更好地描述M83（NGC 5236）的丰富超新星残留物（SNR），我们在M83中获得了119个SNRS和SNR候选者的高分辨率（约85 km/s）的光谱，该光谱与Gemini/gmos的M83中获得了Young SNRS B12-12-174A和SNRS B12-174A的新光谱。大多数SNR和SNR候选者的Hα比率超过0.4。 Combining these results with earlier studies we have carried out with MUSE and at lower spectroscopic resolution with GMOS, we have confirmed a total of 238 emission nebulae to be SNRs on the basis of their [S II]:Hα ratios, about half of which have emission lines that show velocity broadening greater than 100 km/s, providing a kinematic confirmation that they are SNRs and not H II regions.从整个样品中，我们发现速度宽度与[O I]λ6300：Hα，[n ii]λ6584：Hα和[S II]λλ6716,6731：Hα的线比之间有很强的相关性。密度敏感的[S II]λ6716：λ6731线比与SNR直径密切相关，但与速度宽度无关。我们在先前发表的冲击模型的背景下讨论了这些结果。
In order to better characterize the rich supernova remnant (SNR) population of M83 (NGC 5236), we have obtained high-resolution (about 85 km/s) spectra of 119 of the SNRs and SNR candidates in M83 with Gemini/GMOS, as well as new spectra of the young SNRs B12-174a and SN1957D. Most of the SNRs and SNR candidates have [S II]:Hα ratios that exceed 0.4. Combining these results with earlier studies we have carried out with MUSE and at lower spectroscopic resolution with GMOS, we have confirmed a total of 238 emission nebulae to be SNRs on the basis of their [S II]:Hα ratios, about half of which have emission lines that show velocity broadening greater than 100 km/s, providing a kinematic confirmation that they are SNRs and not H II regions. Looking at the entire sample, we find a strong correlation between velocity widths and the line ratios of [O I]λ6300:Hα, [N II]λ6584:Hα and [S II]λλ6716,6731:Hα. The density-sensitive [S II]λ6716:λ6731 line ratio is strongly correlated with SNR diameter, but not with the velocity width. We discuss these results in the context of previously published shock models.
