An Anti-Noise Method for Radial Velocity Measurement of M-Type Stars
文献类型：期刊论文
| 作者 | Yi ZP(衣振萍)1; Pan JC(潘景昌)1; Song YH(宋轶晗)2 ; Luo AL(罗阿理)2
|
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2017 |
| 卷号 | 37期号:8页码:2594 |
| 关键词 | DIGITAL SKY SURVEY M-DWARFS LAMOST DR1 Radial velocity LAMOST M-type star Spectrum Feature selection |
| ISSN号 | 1000-0593 |
| 英文摘要 | M dwarfs are the most common stars in the Milky Way, and their motion brings to light the evolution of the Milky Way. Radial velocity (RV) of M dwarf is one of the most important parameters to reflect its motion. Chinese large scale scientific construction project LAMOST survey has obtained hundreds of thousands of M-type stars and their radial velocities measurement which needs the automatic and efficient program. The most commonly used method of measuring the radial velocity of an M star is to cross correlation between its observed spectra and the template spectra. However, in the actual process, idiosyncrasies of individual spectra and noises often lead to the loss of accuracy of radial velocities. To alleviate the effect induced by the above factors, in this paper, we try to improve radial velocities measurement of M dwarfs especially for those spectra with higher signal noise ratio but with local noises. A statistical method combining experienced features is proposed to select discriminative wavelength ranges of spectra for radial velocity measurement, avoiding noise affected wavelength regions. Some spectra from LAMOST DR3 M-type catalogue are used to test this method and the results are compared with the radial velocities of the same target from APOGEE. The experimental results show that the proposed method can effectively improve the accuracy of radial velocity measurement for M-type stars by reducing the influence of local spectral noises. |
| 资助项目 | [National Development and Reform Commission] |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/63011]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.山东大学 2.中国科学院国家天文台 |
| 推荐引用方式 GB/T 7714 | Yi ZP,Pan JC,Song YH,et al. An Anti-Noise Method for Radial Velocity Measurement of M-Type Stars[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2017,37(8):2594. |
| APA | 衣振萍,潘景昌,宋轶晗,&罗阿理.(2017).An Anti-Noise Method for Radial Velocity Measurement of M-Type Stars.SPECTROSCOPY AND SPECTRAL ANALYSIS,37(8),2594. |
| MLA | 衣振萍,et al."An Anti-Noise Method for Radial Velocity Measurement of M-Type Stars".SPECTROSCOPY AND SPECTRAL ANALYSIS 37.8(2017):2594. |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。