论文标题
Gaia DR3中AGB后星的人口普查：大量银河系后RGB星星的证据
A census of Post-AGB stars in Gaia DR3: evidence for a substantial population of Galactic post-RGB stars
论文作者
论文摘要
本文介绍了人力资源图中银河后的临时巨型分支星星的第一次人口普查。我们将基于GAIA DR3视差的距离与灭绝校正的集成通量结合在一起，并为185颗恒星样品衍生而成，这些恒星被认为是文献中的AGB恒星。亮度使我们能够创建一个人力资源图，该图包含迄今为止迄今为止的最多的AGB候选对象。理论进化后的AGB轨道涵盖的典型光度范围以及行星中央恒星所观察到的很大一部分物体落在典型的光度范围之内。这些包括大规模进化的超级巨人和较低的光度对象。在这里，我们强调了一个事实，即AGB后候选人的三分之一是不足的，我们将这些候选人识别为最近公认的红外巨型分支对象，被认为是二进制进化的结果。
This paper presents the first census of Galactic post-Asymptotic Giant Branch stars in the HR diagram. We combined Gaia DR3 parallax-based distances with extinction corrected integrated fluxes, and derived luminosities for a sample of 185 stars that had been proposed to be post-AGB stars in the literature. The luminosities allow us to create an HR diagram containing the largest number of post-AGB candidate objects to date. A significant fraction of the objects fall outside the typical luminosity range as covered by theoretical evolutionary post-AGB tracks as well as observed for Planetary Nebula central stars. These include massive evolved supergiants and lower luminosity objects. Here we highlight the fact that one third of the post-AGB candidates is underluminous and we identify these with the recently recognised class of post-Red Giant Branch objects thought to be the result of binary evolution.
