用自动行星望远镜观测到的贫金属恒星。III。CEMP-no星是总体III星的后代
Metal-poor Stars Observed with the Automated Planet Finder Telescope. III. CEMP-no Stars are the Descendant of Population III Stars
摘要：
在这项研究中，我们报告了一个概率洞察恒星质量和超新星（SNe）爆炸能量的可能的祖先的五个CEMP-没有恒星。这是通过直接比较轻元素丰度比[X/Fe]和预测的大质量无金属恒星SN的核合成产率来完成的。这种比较表明可能的祖先恒星的质量范围为11 - 22\，M $_{\odot}$和爆炸能量为$0.3 - 1.8 \times 10^{51}$ \，erg。从$Gaia$ DR 2得到的化学丰度与运动学的耦合表明，我们的样品没有进入外晕区。此外，我们认为这些CEMP-no星不是$Gaia$ -Sausage或$Gaia$ -Sequoia的残余星，但另一个吸积事件可能是这些恒星对银河系星系晕的贡献。
英文摘要：
In this study, we report a probabilistic insight into the stellar mass and supernovae (SNe) explosion energy of the possible progenitors of five CEMP-no stars. This was done by a direct comparison between the abundance ratios [X/Fe] of the light-elements and the predicted nucleosynthetic yields of SN of high-mass metal-free stars. This comparison suggests possible progenitors with stellar mass range of 11 - 22\,M$_{\odot}$ and explosion energies of $0.3 - 1.8 \times 10^{51}$\,erg. The coupling of the chemical abundances with kinematics derived from $Gaia$ DR2 suggests that our sample do not enter the outer-halo region. In addition, we suggest that these CEMP-no stars are not $Gaia$-Sausage nor $Gaia$-Sequoia remnant stars, but another accretion event might be responsible for the contribution of these stars to the Galactic Halo of the Milky-Way.
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。
