基于光谱相似度的恒星大气参数自动测量方法
发布时间：2018-08-07 13:35
【摘要】：采用模板匹配方法进行恒星光谱的自动处理时,不需要计算光谱的线指数,而采取对全谱匹配的方法尽可能多的保存有用的信息,可得到比较理想的结果。提出一种基于光谱相似度的恒星大气参数自动测量的方法。首先对恒星光谱进行连续谱归一化,然后通过计算待测光谱和模板光谱之间的相似性来进行模板匹配,从而得到相对准确的恒星大气参数。通过ELODIE实测光谱数据和NGS理论模板库之间的实验表明,本方法可有效进行恒星大气参数的自动测量,并能得到理想的结果。
[Abstract]:When the template matching method is used for the automatic processing of star spectrum, it is not necessary to calculate the line exponent of the spectrum, but to save as much useful information as possible by using the method of full spectrum matching, the ideal results can be obtained. A method for automatic measurement of stellar atmospheric parameters based on spectral similarity is proposed. Firstly, the star spectrum is normalized by continuous spectrum, and then the template matching is carried out by calculating the similarity between the spectrum to be measured and the template spectrum, and then the relatively accurate atmospheric parameters of the star are obtained. The experimental results between the measured spectral data of ELODIE and the template library of NGS theory show that this method can be used to measure the atmospheric parameters of stars effectively, and the ideal results can be obtained.
【作者单位】： 山东大学(威海)机电与信息工程学院;中国科学院光学天文重点实验室 中国科学院国家天文台;
【基金】：国家自然科学基金项目(10973021,11078013)资助
【分类号】：P144
本文编号：2170181
[Abstract]:When the template matching method is used for the automatic processing of star spectrum, it is not necessary to calculate the line exponent of the spectrum, but to save as much useful information as possible by using the method of full spectrum matching, the ideal results can be obtained. A method for automatic measurement of stellar atmospheric parameters based on spectral similarity is proposed. Firstly, the star spectrum is normalized by continuous spectrum, and then the template matching is carried out by calculating the similarity between the spectrum to be measured and the template spectrum, and then the relatively accurate atmospheric parameters of the star are obtained. The experimental results between the measured spectral data of ELODIE and the template library of NGS theory show that this method can be used to measure the atmospheric parameters of stars effectively, and the ideal results can be obtained.
【作者单位】： 山东大学(威海)机电与信息工程学院;中国科学院光学天文重点实验室 中国科学院国家天文台;
【基金】：国家自然科学基金项目(10973021,11078013)资助
【分类号】：P144
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