Relative flux calibration for the Guoshoujing Telescope (LAMOST)
文献类型：期刊论文
| 作者 | Song, Yi-Han1,2 ; Luo, A-Li1; Comte, Georges3,4; Bai, Zhong-Rui1; Zhang, Jian-Nan1; Du, Wei1,2; Zhang, Hao-Tong1; Chen, Jian-Jun1; Zuo, Fang1; Zhao, Yong-Heng1
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2012-04-01 |
| 卷号 | 12期号:4页码:453-464 |
| 关键词 | techniques: spectroscopic calibration: methods:data analysis |
| 英文摘要 | This paper presents a relative flux calibration method for the Guoshoujing Telescope (LAMOST), which may be applied to connect a blue spectrum to a red spectrum to build the whole spectrum across the total wavelength range (3700 similar to 9000 angstrom). In each spectrograph, we estimate the effective temperatures of selected stars using a grid of spectral line indices in the blue spectral range and a comparison with stellar atmosphere models. For each spectrograph, stars of types A and F are selected as pseudo-standard stars, and the theoretical spectra are used to calibrate both the blue (3700 similar to 5900 angstrom) and red spectrograph arms (5700 similar to 9000 angstrom). Then the spectral response function for these pseudo-standard stars could be used to correct the raw spectra provided by the other fibers of the spectrograph, after a fiber efficiency function has been derived from twilight flat-field exposures. A key problem in this method is the fitting of a pseudo stellar continuum, so we also give a detailed description of this step. The method is tested by comparing a small sample of LAMOST spectra calibrated in this way on stars also observed by the Sloan Digital Sky Survey. The result shows that the T-eff estimation and relative flux calibration method are adequate. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000303278100009 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6195]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Observ Astron Marseille Prov, F-13388 Marseille, France 4.Lab Astrophys Marseille, F-13388 Marseille, France |
| 推荐引用方式 GB/T 7714 | Song, Yi-Han,Luo, A-Li,Comte, Georges,et al. Relative flux calibration for the Guoshoujing Telescope (LAMOST)[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2012,12(4):453-464. |
| APA | Song, Yi-Han.,Luo, A-Li.,Comte, Georges.,Bai, Zhong-Rui.,Zhang, Jian-Nan.,...&Fang Zuo.(2012).Relative flux calibration for the Guoshoujing Telescope (LAMOST).RESEARCH IN ASTRONOMY AND ASTROPHYSICS,12(4),453-464. |
| MLA | Song, Yi-Han,et al."Relative flux calibration for the Guoshoujing Telescope (LAMOST)".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 12.4(2012):453-464. |
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来源：国家天文台
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