银河系中央秒差距内的内偏振恒星及其恒星形成的意义
Intrinsically Polarized Stars and Implication for Star Formation in the Central Parsec of Our Galaxy
摘要：
我们在斯巴鲁望远镜上进行了自适应光学辅助观测，并在银河系中央秒差距内发现了11个固有偏振源。它们是从Ks<15.5的318个点源中选出的，用斯托克斯Q/I-U/I图对它们的星际偏振进行了修正。考虑到亮度、近红外色余和内禀偏振的数量，其中两个是很好的年轻恒星天体候选者，年龄约为10^5年。如果它们是真正的YSO，它们的存在对该地区的恒星形成机制提供了强有力的限制。在剩下的源中，有两个被称为北旋臂中的弓形激波源，另一个也位于北旋臂中，表现出非常相似的性质，因此可能是迄今未知的弓形激波源。其他来源的内在极化的起源还不确定。
英文摘要：
We have carried out adaptive-optics assisted observations at the Subaru telescope, and have found 11 intrinsically polarized sources in the central parsec of our Galaxy. They are selected from 318 point sources with Ks<15.5, and their interstellar polarizations are corrected using a Stokes Q/I - U/I diagram. Considering brightness, near-infrared color excess, and the amount of intrinsic polarization, two of them are good young stellar object (YSO) candidates with an age of ~10^5 yr. If they are genuine YSOs, their existence provides strong constraints on star formation mechanisms in this region. In the remaining sources, two are known as bow-shock sources in the Northern arm. One other is also located in the Northern arm and shows very similar properties, and thus likely to be a so far unknown bow-shock source. The origin of the intrinsic polarization of the other sources is as yet uncertain.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
