论文标题
行星状星云PN G283.7-05.1的后通道 - 内属二进制二进制中央恒星：可能的红外支线行星星云中央星星中央恒星
The post-common-envelope binary central star of the planetary nebula PN G283.7-05.1: A possible post-red-giant-branch planetary nebula central star
论文作者
论文摘要
我们介绍了行星Nebula PN G283.7 $ - $ 05.1中的后通道 - Envelope Central Star系统的发现和表征。作为Popiplan调查的一部分，深层图像表明，星云可能具有类似于其他后常见后行星星云的躁郁症形态。同时的光线和径向速度曲线建模揭示了新发现的二进制系统，该系统包括在5.9小时的轨道中构成高度辐照的M型主序列恒星，并带有热的前白色前紫外线。发现Nebular祖细胞的质量特别低约0.4 m $ _ \ odot $，使PN G283.7 $ - $ 05.1仅是少数几个候选行星星云之一，成为一个普通emenvelope事件的产物，而仍在红色的巨型分支上。除了其低质量之外，发现模型温度，表面重力和光度都与观察到的恒星和网络光谱一致，通过与模型大气和光电子化建模进行比较。但是，高温（T $ _ \ MATHRM {EFF} \ SIM $ 95KK）和NEBULA中央恒星的高光度与RGB后RGB进化轨道不一致。
We present the discovery and characterisation of the post-common-envelope central star system in the planetary nebula PN G283.7$-$05.1. Deep images taken as part of the POPIPlaN survey indicate that the nebula may possess a bipolar morphology similar to other post-common-envelope planetary nebulae. Simultaneous light and radial velocity curve modelling reveals the newly discovered binary system to comprise a highly-irradiated, M-type main-sequence star in a 5.9 hour orbit with a hot pre-white-dwarf. The nebular progenitor is found to have a particularly low mass of around 0.4 M$_\odot$, making PN G283.7$-$05.1 one of only a handful of candidate planetary nebulae to be the product of a common-envelope event while still on the red giant branch. Beyond its low mass, the model temperature, surface gravity and luminosity are all found to be consistent with the observed stellar and nebular spectra through comparison with model atmospheres and photoionisation modelling. However, the high temperature (T$_\mathrm{eff}\sim$95kK) and high luminosity of the central star of the nebula are not consistent with post-RGB evolutionary tracks.
