Long-term photometry of pre-MS stars

To broaden the search and study stars in the early evolutionary phase, we investigated a sample of 17 pre-main sequence objects previously detected as either H{alpha}...为拓宽早期演化阶段恒星的搜寻与研究范畴，我们对17颗此前被探测到呈现Hα（H{alpha}）特征的主序前（pre-main sequence）天体样本展开了研究。