Camelopardalis尘埃和分子云中的年轻恒星。V.更多的YSO通过光谱确认
Young stars in the Camelopardalis dust and molecular clouds. V. More YSOs confirmed spectroscopically
摘要：
获得了鹿豹座星云和英仙座北部星云中22颗被怀疑是主序前天体（YSO）的恒星的远红光谱。这一演化状态在位于大质量原恒星GL 490附近的尘埃和分子云中的10颗恒星、H II区Sh 2 -205附近的4颗恒星和暗星云TGU 1041中的1颗恒星中得到了证实。所有这些物体都表现出H α线的发射，其中一些在O I和Ca II线的发射。确定了光谱能量分布、发射谱线的等效宽度和近似光谱类别。利用2 MASS、IRAS和MSX红外测光估计了恒星的演化阶段。现在，我们已经对GL 490区域的14颗恒星和Sh 2 -205区域的8颗恒星的YSO状态进行了光谱确认。它们的光谱类型从A到K，但大多数是Herbig Ae星或介于金牛T型和Herbig星之间的中间天体。这两个恒星形成区都位于本地臂的外缘附近，距离900 pc。
英文摘要：
Far red spectra for 22 stars in the Camelopardalis and the northern Perseus dark clouds, suspected to be pre-main-sequence objects (YSOs), are obtained. This evolutionary status is confirmed for ten stars located in the dust and molecular cloud close to the high-mass protostar GL 490, four stars near the H II region Sh2-205 and one star in the dark cloud TGU 1041. All of these objects exhibit emission in the H alpha line and some of them emission in the O I and Ca II lines. The spectral energy distributions, equivalent widths of the emission lines and approximate spectral classes are determined. Evolutionary stages of the stars are estimated from 2MASS, IRAS and MSX infrared photometry. Now we have spectral confirmation of the YSO status for 14 stars in the GL 490 area and 8 stars at Sh2-205. Their spectral types are from A to K, but most of them are either Herbig Ae stars or intermediate objects between T Tauri type and Herbig stars. Both these star forming regions are located near the outer edge of the Local arm at a distance of 900 pc.
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