The classical Doppler-broadened absorption line profile, which is exactly derived by the classical Doppler effect and Maxwell speed distribution for the first time, is asymmetrically broadened with red-shift more than blue-shift, and its peak is red-shifted. Nonetheless, the half-width at half-maximum in the blue-shift wing is larger than that in the red-shift wing. The classical Doppler-broadened absorption line profile is different from the classical Doppler-broadened emission line profile. The classical Doppler-broadened absorption line profile is applied to disprove one of the two existing relativistic Doppler-broadened absorption line profiles. Also, line-shape models based on the classical Doppler-broadened absorption line profile are suggested for absorption line spectroscopy.

中文翻译：

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由于热效应而产生的经典多普勒展宽的吸收线轮廓

首次由经典多普勒效应和麦克斯韦速度分布精确得出的经典多普勒增宽吸收线轮廓，通过红移大于蓝移不对称加宽，并且其峰值发生了红移。但是，蓝移翼的半宽最大为半，而红移翼的半宽最大。经典的多普勒展宽的吸收线轮廓不同于经典的多普勒展宽的发射线轮廓。应用经典的多普勒展宽的吸收线轮廓来证明两个现有的相对论多普勒展宽的吸收线轮廓之一。此外，建议将基于经典多普勒扩展吸收线轮廓的线形模型用于吸收线光谱。