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Metallicity Measurements of Pleiades Young Dwarfs

机译：le小侏儒的金属性测量

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摘要

We present metallicity analyses of A, F, and G stars in the Pleiades cluster. High-resolution spectroscopic observations of 25 stars were made with the HIDES spectrograph on the Okayama 1.88-m telescope and the GAOES spectrograph on the Gunma 1.5-m telescope. The resultant optical spectra had an S/N of 70-220. We measured the equivalent widths of 60 neutral iron and ～ 15 single-ionized iron absorption lines to determine stellar parameters and metallicities. We derived the metallicities of 22 stars by adapting the method of equivalent-width measurements. The average metallicity was +0.03 ± 0.05 dex. The dispersion was comparable to the statistical uncertainties of the metallicity measurements; in addition, the metallicities of all 22 stars fell within the dispersion range, indicating their uniform metallicities. A comparison of our results with previous studies confirmed a high probability of metallicity homogeneity in Pleiades.
机译：我们介绍the星团中A，F和G星的金属性分析。用冈山1.88米望远镜上的HIDES光谱仪和群马1.5米望远镜上的GAOES光谱仪对25颗恒星进行高分辨率光谱观察。所得光谱的S / N为70-220。我们测量了60条中性铁和15条单电离铁吸收线的等效宽度，以确定恒星参数和金属性。通过采用等宽测量方法，我们得出了22颗恒星的金属性。平均金属度为+0.03±0.05 dex。分散度可与金属度测量的统计不确定度相比较;此外，所有22颗恒星的金属度均在色散范围内，表明它们具有均匀的金属度。将我们的结果与以前的研究进行比较，证实P宿星的金属均匀性的可能性很高。

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