ELODIE档案中的太阳孪生
Solar twins in the ELODIE archive
摘要：
为了找到太阳孪晶，分析了一个从ESDIE档案中提取的约2800个光谱的大型数据集。一系列与太阳光谱非常相似的恒星光谱是通过应用纯微分方法直接在通量上选择的。作为太阳参考，使用了18个小行星、月球和蓝天的光谱。经过仔细选择合适的谱线，确定了太阳双星候选者的大气参数和8种化学元素的丰度差。李功能的目标进行了调查，并从文献中收集的绝对大小和年龄的额外信息。HIP076114（HD138573）是我们最好的孪生候选者，在所有这些属性上看起来都和太阳一模一样。
英文摘要：
A large dataset of ~2800 spectra extracted from the ELODIE archive was analysed in order to find solar twins. A list of stellar spectra closely resembling the spectrum of the Sun was selected by applying a purely differential method, directly on the fluxes. As solar reference, 18 spectra of asteroids, Moon and blue sky were used. Atmospheric parameters and differential abundances of 8 chemical elements were determined for the solar twin candidates, after a careful selection of appropriate lines. The Li feature of the targets was investigated and additional information on absolute magnitude and age was gathered from the literature. HIP076114 (HD138573) is our best twin candidate, looking exactly like the Sun in all these properties.
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。
