论文标题
IAX型超新星喷射与氦同伴星的相互作用
The interaction of Type Iax supernova ejecta with a helium companion star
论文作者
论文摘要
IAX型Supenovae型（SNE IAX）是重要的sne ia类。但是，尚未了解他们的祖细胞和爆炸机制。已经提出，可以在具有氦气（HE）恒星供体的二元系统中的Chandrasekhar-Mass White Dwarfs（WDS）的薄弱爆炸产生SNE IAX。在这样的祖细胞系统中，预计由射流式相互作用引起的剥离的伴侣材料有望在其后期光谱中呈现一些他的特征。但是，在sne iax的较晚光谱中检测HE线尚未成功，这给出了HE质量<0.002-0.1太阳能块的上限。在这项工作中，我们通过使用弱的纯deflagration爆炸模型进行三维流体动力学模拟来研究Sn iax弹出率与He Star Companion之间的相互作用。我们发现，可以通过SN爆炸从伴侣恒星中剥离约0.004个太阳能材料，该爆炸非常接近（或低于）在SNE IAX中总剥离的HE质量上的观察性上限。因此，我们得出的结论是，如果确实是由于祖先捐赠者在祖细胞系统中Chandrasekhar-Mass WD的纯纯deflagration爆炸而导致的，则可以合理地解释HE线在SNE IAX的较晚光谱中的未检测。
Type Iax supenovae (SNe Iax) are an important sub-luminous class of SNe Ia. However, their progenitors and explosion mechanism have not been understood yet. It has been suggested that SNe Iax may be produced from weak deflagration explosions of Chandrasekhar-mass white dwarfs (WDs) in binary systems with a helium (He) star donor. In such progenitor systems, the stripped He companion material caused by the ejecta-companion interaction is expected to present some He features in their late-time spectra. However, the detection of He lines in late-time spectra of SNe Iax has not yet been successful, which gives an upper limit on the amount of stripped He mass of < 0.002-0.1 solar masses. In this work, we study the interaction between SN Iax ejecta and a He star companion by performing three-dimensional hydrodynamical simulations with a weak pure deflagration explosion model. We find that about 0.004 solar masses of He material can be stripped off from the companion star by SN explosion, which is very close to (or lower than) the observational upper-limit on the total stripped He mass in SNe Iax. We, therefore, conclude that non-detection of He lines in late-time spectra of SNe Iax could be reasonably explained if they are indeed resulted from weak pure deflagration explosions of Chandrasekhar-mass WDs in progenitor systems with a He star donor.
