基于光譜相似度的恒星大氣參數(shù)自動測量方法
發(fā)布時間:2018-08-07 13:35
【摘要】:采用模板匹配方法進行恒星光譜的自動處理時,不需要計算光譜的線指數(shù),而采取對全譜匹配的方法盡可能多的保存有用的信息,可得到比較理想的結(jié)果。提出一種基于光譜相似度的恒星大氣參數(shù)自動測量的方法。首先對恒星光譜進行連續(xù)譜歸一化,然后通過計算待測光譜和模板光譜之間的相似性來進行模板匹配,從而得到相對準(zhǔn)確的恒星大氣參數(shù)。通過ELODIE實測光譜數(shù)據(jù)和NGS理論模板庫之間的實驗表明,本方法可有效進行恒星大氣參數(shù)的自動測量,并能得到理想的結(jié)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.
【作者單位】: 山東大學(xué)(威海)機電與信息工程學(xué)院;中國科學(xué)院光學(xué)天文重點實驗室 中國科學(xué)院國家天文臺;
【基金】:國家自然科學(xué)基金項目(10973021,11078013)資助
【分類號】:P144
本文編號: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.
【作者單位】: 山東大學(xué)(威海)機電與信息工程學(xué)院;中國科學(xué)院光學(xué)天文重點實驗室 中國科學(xué)院國家天文臺;
【基金】:國家自然科學(xué)基金項目(10973021,11078013)資助
【分類號】:P144
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