通过InfraRed通量法绝对校准的有效温标
An absolutely calibrated effective temperature scale from the InfraRed Flux Method
摘要：
多年来已经提出了各种有效的温标。尽管做了大量的工作和内部精度通常达到高，系统的差异，为了100 K（或更多）之间的各种尺度仍然存在。我们提出了一个调查的基础上，红外线通量的方法，旨在评估这种差异的来源，并确定其起源。我们打破了不同尺度之间的僵局，通过使用一个大的太阳双星，恒星的光谱和光度相同的太阳，设置绝对零度点的有效温度范围内几度。我们新校准的，准确和精确的温标适用于矮星和亚巨星，从超太阳金属丰度到目前已知的最缺乏金属的恒星。在太阳金属丰度下，我们的结果验证了光谱有效温标，而当[Fe/H]<-2.5时，我们的温度比从模型拟合到巴耳末线所确定的温度高约100 K，比从Fe线的激发平衡所获得的温度高约200 K。经验测辐射热校正和有用的关系连接光度指数有效温度和角直径已经推导出来。我们的研究结果充分利用了近年来在绝对校准中达到的高精度，并通过干涉角直径和空间分光光度法在广泛的有效温度和金属丰度范围内进一步验证。
英文摘要：
Various effective temperature scales have been proposed over the years. Despite much work and the high internal precision usually achieved, systematic differences of order 100 K (or more) among various scales are still present. We present an investigation based on the Infrared Flux Method aimed at assessing the source of such discrepancies and pin down their origin. We break the impasse among different scales by using a large set of solar twins, stars which are spectroscopically and photometrically identical to the Sun, to set the absolute zero point of the effective temperature scale to within few degrees. Our newly calibrated, accurate and precise temperature scale applies to dwarfs and subgiants, from super-solar metallicities to the most metal-poor stars currently known. At solar metallicities our results validate spectroscopic effective temperature scales, whereas for [Fe/H]<-2.5 our temperatures are roughly 100 K hotter than those determined from model fits to the Balmer lines and 200 K hotter than those obtained from the excitation equilibrium of Fe lines. Empirical bolometric corrections and useful relations linking photometric indices to effective temperatures and angular diameters have been derived. Our results take full advantage of the high accuracy reached in absolute calibration in recent years and are further validated by interferometric angular diameters and space based spectrophotometry over a wide range of effective temperatures and metallicities.
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。
