Spectral data and model

Spectral data used for characterization. This plots contains the blue spectra of 45 stars obtained at Pico dos Dias Observatory (black line). Main spectral lines are signaled. Red line represent the spectral model from sme with the parameters showen in Table 2.In some cases the normalization procedure distorted Hδ region. For these cases, the region was masked out of the model and denoted by a dotted line.用于天体特征表征的光谱数据。本图表展示了在皮科斯·杜斯·迪亚斯天文台（Pico dos Dias Observatory）获取的45颗恒星的蓝端光谱，以黑色线条呈现。主要光谱线均已标注。红色线条代表基于sme得到的光谱模型，其参数见表2。部分案例中，归一化流程会对Hδ谱区造成畸变；针对此类情况，该谱区已从模型中屏蔽，并以虚线标注。