Metallicity calibration for solar type stars based on red spectra |
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Authors: | Jing-Kun Zhao Gang Zhao Yu-Qin Chen A-Li Luo |
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Affiliation: | Jing-Kun Zhao,Gang Zhao,Yu-Qin Chen and A-Li Luo Key Laboratory of Optical Astronomy,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China |
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Abstract: | Based on a high resolution and high signal-to-noise ratio(S/N) spectral analysis of 90 solar-type stars,we have established several new metallicity calibrations in the Teff range [5600,6500]K based on red spectra with the wavelength range of 560-880nm.The new metallicity calibrations are applied to determine the metallicity of solar analogs selected from Sloan Digital Sky Survey(SDSS) spectra.There is a good consistent result with the adopted value presented in SDSS-DR7 and a small scatter of 0.26dex for st... |
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