Metallicity calibration for solar type stars based on red spectra

被引：3

作者：

Zhao, Jing-Kun ^{[1
]}

Zhao, Gang ^{[1
]}

Chen, Yu-Qin ^{[1
]}

Luo, A-Li ^{[1
]}

机构：

[1] Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China

来源：

RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2011年 / 11卷 / 05期

基金：

中国国家自然科学基金;

关键词：

techniques: radial velocities; stars: temperatures; stars: abundances; DIGITAL SKY SURVEY; NEWTON-TELESCOPE LIBRARY; DATA RELEASE; EMPIRICAL SPECTRA; PARAMETERS;

D O I：

10.1088/1674-4527/11/5/006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on a high resolution and high signal-to-noise ratio (SIN) spectral analysis of 90 solar-type stars, we have established several new metallicity calibrations in the T-eff range [5600, 6500] K based on red spectra with the wavelength range of 560-880 nm. 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 0.26 dex for stars with S/N > 50 being obtained. This study provides a new reliable way to derive the metallicity for solar-like stars with low resolution spectra. In particular, our calibrations are useful for finding metal-rich stars, which are missing in the SEGUE Stellar Parameter Pipeline.

引用

页码：563 / 576

页数：14

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