| 利用多星表交叉外推恒星能量的方法 |
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| 引用本文： | 王誉都,孙小进,张恒,陈凡胜. 利用多星表交叉外推恒星能量的方法[J]. 红外与毫米波学报, 2019, 38(4): 473-478 |
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| 作者姓名： | 王誉都 孙小进 张恒 陈凡胜 |
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| 作者单位： | 中国科学院智能红外感知重点实验室,上海200083;中国科学院上海技术物理研究所,上海200083;中国科学院大学,北京100049;中国科学院智能红外感知重点实验室,上海200083;中国科学院上海技术物理研究所,上海200083 |
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| 基金项目： | 广目地球科学卫星红外热像仪 |
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| 摘 要： | 为了获取满足特定探测器工作谱段的恒星能量,提出了一种基于多星表数据的恒星能量外推方法,利用IRAS、WISE和2MASS星表数据交叉校验,将已有的高精度恒星谱段能量转化为相机的任意工作谱段.该模型简化了外推过程,提高了外推效率,实现对70%的恒星外推精度3%以内,与Cohen等人对Vega和Sirius长期观测得到的结果相同.同时,给出一个可用于辐射定标的星表.在恒星定标时可以根据模型外推结果选择更适合探测器的多恒星数据.
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| 关 键 词： | 恒星定标 能量外推 星表 普朗克定律 |
A new approach for extrapolating star flux using cross-matching multiple catalogues |
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| WANG Yu-Du,SUN Xiao-Jin,ZHANG Heng,CHEN Fan-Sheng. A new approach for extrapolating star flux using cross-matching multiple catalogues[J]. Journal of Infrared and Millimeter Waves, 2019, 38(4): 473-478 |
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| Authors: | WANG Yu-Du SUN Xiao-Jin ZHANG Heng CHEN Fan-Sheng |
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| Affiliation: | (Key Laboratory of Intelligent Infrared Perception, Chinese Academy of Sciences, Shanghai 200083;Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;University of Chinese Academy of Sciences, Beijing 100049, China) |
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| Abstract: | This paper presents a model for extrapolating star flux from cross-matching multiple catalogues combining the data of IRAS, WISE and 2MASS, which used the Planck’s law to extrapolate flux to every band. The model simplifies the extrapolation process, and improves the extrapolation efficiency with a high precision of 3% for 70% of the stars. Our findings are consistent with the independent long-term observation of the Vega and Sirius star reported by Cohen et al . According to the extrapolation results, more suitable multiple data of stars could be selected for specific detectors′ star calibration. |
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| Keywords: | star calibration flux extrapolation star catalogues Planck's law |
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