Metallicity Measurements of Pleiades Young Dwarfs

Details Metallicity Measurements of Pleiades Young Dwarfs Metallicity Measurements of Pleiades Young Dwarfs

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009pasj...61..930f&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.61, No.5, pp.930--939

Astronomy and Astrophysics

Astronomy

2

Open Clusters And Associations: Individual (Pleiades), Stars: Abundances, Techniques: High-Resolution Spectroscopy

Scientific paper

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.

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