论文标题
基于氢化物分子线的C，N和O丰度的光谱测定。
Spectroscopic determination of C, N, and O abundances of solar-analog stars based on the lines of hydride molecules
论文作者
论文摘要
通过将合成拟合分析应用于其光谱中，在蓝色或近紫外的区域中，通过将合成拟合分析应用于CH，NH和OH分子的蓝色或近紫外区域，以阐明与[Fe/H]相比，通过将合成拟合分析应用于蓝色或近紫外区域的光谱中，确定了118个太阳能分析星的光谱c，n和O的光谱。 It turned out that, in the range of -0.6<[Fe/H]<+0.3, [C/Fe] shows a marginally increasing tendency with decreasing [Fe/H] with a slight upturn around [Fe/H]~0, [N/Fe] tends to somewhat decrease towards lower [Fe/H], and [O/Fe] systematically increases (and thus [C/O] decreases) with a decrease in [Fe/H].尽管这些结果在质上与先前的确定基于原子线是一致的，但这些[C/Fe]，[N/Fe]和[O/Fe]的分配中心在近极金属性下的分配中心略有阴性，而几百分之一的DEX被解释为与我们的Solar Systeart of Solar System System of Solare Materation相关的非同寻常的多余丰富性。但是，在行星宿主星的[C，N，O/Fe]比率中未观察到清晰的异常。发现四个非常缺陷的恒星中有三个显示出异常的[C/Fe]或[N/Fe]，这可能是由于进化伴侣的质量转移所致，尽管其关系与耗尽机制的关系尚不清楚。
Photospheric C, N, and O abundances of 118 solar-analog stars were determined by applying the synthetic-fitting analysis to their spectra in the blue or near-UV region comprising lines of CH, NH, and OH molecules, with an aim of clarifying the behaviors of these abundances in comparison with [Fe/H]. It turned out that, in the range of -0.6<[Fe/H]<+0.3, [C/Fe] shows a marginally increasing tendency with decreasing [Fe/H] with a slight upturn around [Fe/H]~0, [N/Fe] tends to somewhat decrease towards lower [Fe/H], and [O/Fe] systematically increases (and thus [C/O] decreases) with a decrease in [Fe/H]. While these results are qualitatively consistent with previous determinations mostly based on atomic lines, the distribution centers of these [C/Fe], [N/Fe], and [O/Fe] at the near-solar metallicity are slightly negative by several hundredths dex, which is interpreted as due to unusual solar abundances possibly related to the planetary formation of our solar system. However, clear anomalies are not observed in the [C,N,O/Fe] ratios of planet-host stars. Three out of four very Be-deficient stars were found to show anomalous [C/Fe] or [N/Fe] which may be due to mass transfer from the evolved companion, though its relation to Be depletion mechanism is still unclear.
