一个发光的,蓝色的祖先系统类型Iax超新星2012Z
Curtis McCully1, Saurabh W Jha1, Ryan J Foley2
1Department of Physics and Astronomy, Rutgers, the State University of New Jersey, 136 Frelinghuysen Road, Piscataway, New Jersey 08854, USA.
Nature
|August 8, 2014
概括
类型Iax超新星,Ia型超新星的能量较小的子类,通常是白矮星的爆炸. 确定了SN 2012Z的祖先是一个发光的蓝色系统,这表明它是一个星伴侣.
科学领域:
- 天体物理学 天体物理学
- 恒星进化 恒星进化
- 超新星是指一个超新星.
背景情况:
- Iax型超新星是Ia型超新星的一个子类,其特点是弹射速度和发光度较低.
- 它们的晚期光谱与Ia型不同,但构成表明存在联系.
- 它们的发生率是正常的Ia型超新星的5-30%.
研究的目的:
- 为了确定类型Iax超新星SN 2012Z. 的祖先系统.
- 研究Iax型超新星的性质及其与Ia型超新星的关系.
主要方法:
- 深度爆炸前成像被用来检测SN 2012Z的祖先系统.
- 对原始系统进行光谱和光度分析.
- 与已知的恒星系统进行比较,包括新星V445 Puppis.
主要成果:
- 在爆炸前的图像中检测到SN 2012Z的发光,蓝色的祖先系统.
- 原始系统的特征 (光度,颜色,环境) 类似于新星V445 Puppis的特征.
- 这些发现表明,SN 2012Z是由白矮星从星伴侣中形成的.
结论:
- SN 2012Z的原始系统支持Iax型超新星模型,涉及积累的白矮星.
- 这一发现为Iax型超新星的形成和爆炸机制提供了关键的见解.
- 在SN 2012Z消失后需要进行进一步的观测,以证实祖先假设或探索替代场景.
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