QU Vul喷出物中氖的IR光谱
The Neon Abundance in the Ejecta of QU Vul From Late-Epoch IR Spectra
摘要：
我们目前的地面SpectroCam-10中红外，MMT光学，和斯皮策空间望远镜IRS中红外光谱采取7.62，18.75和19.38年后，分别爆发的老经典新星QU Vulpeculae（新星Vul 1984 #2）。喷出物的光谱主要由氖和氧的禁戒线发射。我们的分析表明，在第一和最后的时代，氖分别比氢多76和168倍。这些高下限的氖丰度证实，QU Vul涉及一个ONeMg白矮星的热核失控，并接近核合成模型预测的产量在这样的事件。
英文摘要：
We present ground-based SpectroCam-10 mid-infrared, MMT optical, and Spitzer Space Telescope IRS mid-infrared spectra taken 7.62, 18.75, and 19.38 years respectively after the outburst of the old classical nova QU Vulpeculae (Nova Vul 1984 #2). The spectra of the ejecta are dominated by forbidden line emission from neon and oxygen. Our analysis shows that neon was, at the first and last epochs respectively, more than 76 and 168 times overabundant by number with respect to hydrogen compared to the solar value. These high lower limits to the neon abundance confirm that QU Vul involved a thermonuclear runaway on an ONeMg white dwarf and approach the yields predicted by models of the nucleosynthesis in such events.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
