IRAS 22150+6109 -一颗年轻的B型大圆盘恒星
IRAS 22150+6109 - a young B-type star with a large disc
摘要：
我们提出的红外源IRAS 22150+6109的光学对应物的光谱分析和光谱能量分布（SED）建模的结果。这个来源被认为是位于恒星形成区L 1188的赫比格Be星。光谱中的吸收线表明光谱型B3，而弱的巴耳末发射谱线则反映了星周气体盘的存在。这颗恒星在近红外光谱区没有多余的辐射，而在远红外光谱区有强烈的多余辐射，我们将其解释为来自一个大圆盘的辐射，圆盘的内边缘距离恒星很远（550 au），并且不会衰减其辐射。我们的结论是，IRAS 22150+6109是一颗中等质量的恒星，目前正在经历一个短暂的主序前演化阶段。
英文摘要：
We present the results of a spectroscopic analysis and spectral energy distribution (SED) modelling of the optical counterpart of the infrared source IRAS 22150+6109. The source was suggested to be as a Herbig Be star located in the star forming region L 1188. Absorption lines in the optical spectrum indicate a spectral type B3, while weak Balmer emission lines reflect the presence of a circumstellar gaseous disc. The star shows no excess radiation in the near-infrared spectral region and a strong excess in the far-infrared that we interpret as radiation from a large disc, whose inner edge is located very far from the star (550 au) and does not attenuate its radiation. We conclude that IRAS 22150+6109 is an intermediate-mass star that is currently undergoing a short pre-main-sequence evolutionary stage.
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