Blue Large-amplitude Pulsators: The Possible Surviving Companions of Type Ia Supernovae

Blue Large-amplitude Pulsators: The Possible Surviving Companions of Type Ia Supernovae
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蓝色大振幅脉动器:Ia 型超新星可能幸存的伴星

DOI:
10.3847/1538-4357/abbb8e
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发表时间:
2020-09
期刊:
The Astrophysical Journal
影响因子:
--
通讯作者:
李蛟
李蛟
中科院分区:
其他
文献类型:
--
作者:
孟祥存;韩占文;Philipp Podsiadlowski;李蛟

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单简并(SD)模型,Ia型超新星(SNe Ia)的祖先的主要模型之一,预测应该有幸存的超新星爆炸,其中,原则上,在银河系中可检测到的双同伴。should.be因此,这些幸存的同伴的发现可以为SD模型提供conclusive.support。几年前,人们发现了一种新型的神秘变星,即所谓的蓝色大振幅脉动星(BLAP)。在这里,我们表明,所有的属性的BLAPs可以合理地很好。再现,如果他们确实是这样的幸存的同伴,在其他建议的渠道。这表明,BLAPs可能是长期寻找的Ia型超新星幸存的同伴。我们的模型还预测了一个new.channel为形成单一的热亚矮星,在目前的样品中的热亚矮星的一小群一致。
The single degenerate (SD) model, one of the leading models for the progenitors of Type Ia supernovae (SNe Ia),.predicts that there should be binary companions that survive the supernova explosion, which, in principle, should.be detectable in the Galaxy. The discovery of such surviving companions could therefore provide conclusive.support for the SD model. Several years ago, a new type of mysterious variable was discovered, the so-called blue.large-amplitude pulsators (BLAPs). Here we show that all the properties of BLAPs can be reasonably well.reproduced if they are indeed such surviving companions, in contrast to other proposed channels. This suggests.that BLAPs could potentially be the long-sought surviving companions of SNe Ia. Our model also predicts a new.channel for forming single hot subdwarf stars, consistent with a small group in the present sample of hot subdwarf.stars.
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