Line profile analysis of an astronomical spectrograph with a laser frequency comb
文献类型：期刊论文
| 作者 | Zhao, Fei1,2,4 ; Zhao, Gang1; Lo Curto, Gaspare3; Wang, Hui-Juan1; Liu, Yu-Juan1,4; Wang, Liang1; Wang, Wei1; Liu Yujuan; Wang Huijuan; Wang Wei
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2014-08-01 |
| 卷号 | 14期号:8页码:1037-1045 |
| 关键词 | techniques: radial velocities instrumentation: laser frequency comb |
| 英文摘要 | We present a study of the spectral line shape associated with a High Resolution Spectrograph on the 2.16 m telescope at the Xinglong Observing Station of National Astronomical Observatories, Chinese Academy of Sciences. This measurement is based on modeling the instrumental line shape obtained by unresolved modes from a Yb-fiber mode-locked laser frequency comb. With the current repetition rate of 250 MHz and 26 GHz mode spacing on the spectrograph, we find the absolute variation of the line center, 0.0597 pixel in the direction of the CCDs, and 0.00275 pixel (similar to 3 m s(-1)) for relative variation in successive exposures on a short timescale. A novel double-Gaussian model is presented to improve the quality of the fit by a factor of 2.47 in a typical single exposure. We also use analysis with raw moments and central moments to characterize the change in line shape across the detector. A trend in charge transfer efficiency can be found on the E2V 4096 x 4096 CCD that provides a correction for wavelength calibration aiming to reach a level of precision for radial velocity below 1 m s(-1). |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000340698100014 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6397]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.European So Observ, D-85748 Garching, Germany 4.Shandong Univ, Sch Space Sci & Phys, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Fei,Zhao, Gang,Lo Curto, Gaspare,et al. Line profile analysis of an astronomical spectrograph with a laser frequency comb[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2014,14(8):1037-1045. |
| APA | Zhao, Fei.,Zhao, Gang.,Lo Curto, Gaspare.,Wang, Hui-Juan.,Liu, Yu-Juan.,...&Wang Wei.(2014).Line profile analysis of an astronomical spectrograph with a laser frequency comb.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,14(8),1037-1045. |
| MLA | Zhao, Fei,et al."Line profile analysis of an astronomical spectrograph with a laser frequency comb".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 14.8(2014):1037-1045. |
入库方式： OAI收割
来源：国家天文台
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