| Statistics of Galactic Supernova Remnants |
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| 作者姓名： | Jian-Wen Xu Xi-Zhen Zhang and Jin-Lin Han National Astronomical Observatories Chinese Academy of Sciences Beijing |
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| 作者单位： | Jian-Wen Xu，Xi-Zhen Zhang and Jin-Lin Han National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012 |
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| 基金项目： | the National Natural Science Foundation of China. |
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| 摘 要： | We collected the basic parameters of 231 supernova remnants (SNRs) in our Galaxy, namely, distances (d) from the Sun, linear diameters (D), Galactic heights (Z), estimated ages (t), luminosities (L), surface brightness (∑) and flux densities (S1) at 1-GHz frequency and spectral indices (α). We tried to find possible correlations between these parameters. As expected, the linear diameters were found to increase with ages for the shell-type remnants, and also to have a tendency to increase with the Galactic heights. Both the surface brightness and luminosity of SNRs at 1-GHz tend to decrease with the linear diameter and with age. No other relations between the parameters were found.
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| 关 键 词： | 银河系 超新星残迹 线性直径 状态演化 光谱频率 |
Statistics of Galactic Supernova Remnants |
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| Jian-Wen Xu,Xi-Zhen Zhang and Jin-Lin Han National Astronomical Observatories,Chinese Academy of Sciences,Beijing .Statistics of Galactic Supernova Remnants[J].Chinese Journal of Astronomy and Astrophysics,2005,5(2):165-174. |
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| Authors: | Jian-WenXu Xi-ZhenZhang Jin-LinHan |
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| Institution: | NationalAstronomicalObservatories,ChineseAcademyofSciences,Beijing100012 |
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| Abstract: | We collected the basic parameters of 231 supernova remnants (SNRs) in our Galaxy, namely, distances (d) from the Sun, linear diameters (D), Galactic heights (Z), estimated ages (t), luminosities (L), surface brightness (E) and flux densities (S1) at 1-GHz frequency and spectral indices (a). We tried to find possible correlations between these parameters. As expected, the linear diameters were found to increase with ages for the shell-type remnants, and also to have a tendency to increase with the Galactic heights. Both the surface brightness and luminosity of SNRs at 1-GHz tend to decrease with the linear diameter and with age. No other relations between the parameters were found. |
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| Keywords: | methods: statistical - (ISM:) supernova remnants |
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