矮不规则星系IC10中行星状星云的运动学研究
A kinematic study of planetary nebulae in the dwarf irregular galaxy IC10
摘要：
我们目前的位置，运动学，和行星状星云光度函数（PNLF）的35个行星状星云（PNe）在最近的星暴星系IC 10延伸到3 kpc从星系的中心。我们利用8.2米斯巴鲁望远镜上的光谱仪FOCAS提供的深度成像和光谱能力。PN速度测量通过狭缝光谱技术，这使我们能够探索IC 10的运动学与高精度。使用这些速度，我们得出结论，有一个运动学之间的联系HI信封位于IC 10和星系的PN人口。通过假设PNE在中部地区和郊区有类似的年龄，我们的结果把强有力的观测约束过去的潮汐相互作用的本地组。这是因为，通过测定PN中心恒星的年龄，我们因此推断出恒星形成的一个主要事件的时代可能与HI扩展包层与星系的第一次相遇有关。我们的深度[OIII]图像还允许我们使用PNLF来估计24.1+/-0.25的距离模量，这与基于其他技术的文献中的最新结果一致。
英文摘要：
We present positions, kinematics, and the planetary nebula luminosity function (PNLF) for 35 planetary nebulae (PNe) in the nearest starburst galaxy IC10 extending out to 3kpc from the galaxy's centre. We take advantage of the deep imaging and spectroscopic capabilities provided by the spectrograph FOCAS on the 8.2m Subaru telescope. The PN velocities were measured through the slitless-spectroscopy technique, which allows us to explore the kinematics of IC10 with high precision. Using these velocities, we conclude that there is a kinematic connection between the HI envelope located around IC10 and the galaxy's PN population. By assuming that the PNe in the central regions and in the outskirts have similar ages, our results put strong observational constraints on the past tidal interactions in the Local Group. This is so because by dating the PN central stars, we, therefore, infer the epoch of a major episode of star formation likely linked to the first encounter of the HI extended envelope with the galaxy. Our deep [OIII] images also allow us to use the PNLF to estimate a distance modulus of 24.1+/-0.25, which is in agreement with recent results in the literature based on other techniques.
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。
