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arXiv 1402.1822astro-ph.SR
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SH分子的本影光谱

On SH Molecules in Umbral Spectra

K. Sinha

摘要:

根据我们对探测能力的预测,SH分子的非常弱的谱线已经被报道在太阳的光球光谱中被确定。这可能是在太阳光谱中首次检测到巯基,从而对太阳硫的丰度充满信心。观测还测试了所用的理论频带振荡器强度。太阳黑子比光球层温度低,是大量分子种类的宿主。然而,由于光球辐射散射到观测到的本影中,发现者无法检测到太阳黑子光谱中的SH线,这些SH线预计将显示大于光球等效宽度(简称EW)。探测到光球光谱中的弱谱线,而没有探测到太阳黑子光谱中相对较强的谱线,这可能会引起对探测本身的怀疑。本文通过对光球和黑子模型以及微湍流值的选择,对上述问题进行了详细的研究。新的结果表明,预测的太阳黑子线强度大约是以前报道的一半,并且这些线仍然具有可检测的强度。此外,需要一个实验室测定振子强度感到。

英文摘要:

Following our predictions on detectability, very weak lines of the SH molecules have been reported as identified in the photospheric spectrum of the Sun. This could be the first detection of a mercapto radical in the solar spectrum, thus placing confidence in the solar abundance of Sulfur. The observations additionally tested the utilized theoretical band oscillator strength. Sunspots being cooler than the photosphere are the hosts to a large number of molecular species. However, owing to photospheric radiation scattered into the observed umbra, the discoverers could not detect the lines of SH in the sunspot spectrum where they are expected to show larger than the photospheric equivalent widths (EWs in short). Detection of weak lines in photospheric spectrum coupled with a no-detection of the relatively strong same lines in the sunspot spectrum might cause doubts on the detection itself. The above problem is investigated here in detail with a choice on photospheric and sunspot models and micro-turbulence values. The new results indicate that the predicted sunspot lines are about half intense than reported before and the lines remain of detectable strengths. Further, a need for a laboratory determination of oscillator strengths is felt.

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。

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