论文标题
在盖亚和苔丝时代，对过境的棕色矮人种群的半径测定改进
Improved radius determinations for the transiting brown dwarf population in the era of Gaia and TESS
论文作者
论文摘要
我报告了在Gaia Mission（Gaia DR3）的第三个数据发布之前发布了11个过境棕色矮人（BDS）和低质量星的替代质量 - 拉迪乌斯图（GAIA DR3）。我重新分析了这些过境的BD系统，其物理参数在2008年至2019年之间发表，发现当使用Gaia DR3的视差测量值时，7 BDS在半径估计值或半径不确定性的改善上显示出显着差异。这对于如何使用这些BD来测试Mass-Radius图中的实体进化模型具有重要意义。其余的4个BDS显示了与先前的GAIA DR3测量相一致的质量 - 拉迪乌斯估计值。与原始质量拉迪乌斯测量显着偏差的7个BDS是AD 3116B，Corot-3B，Corot-15B，Epic 201702477b，Kepler-39b，KOI-205B和KOI-415B。其中，AD 3116b是600岁的Praesepe群集的知名成员。此外，一些以前最小的已知过渡BDS，即KOI-205B和KOI-415B，并不像一度想到的那样小，因此由于这项工作，将Mass-Radius地区留下了最古老的BDS。
I report updates to the substellar mass-radius diagram for 11 transiting brown dwarfs (BDs) and low-mass stars published before the third data release from the Gaia mission (Gaia DR3). I reanalyse these transiting BD systems whose physical parameters were published between 2008 and 2019 and find that when using the parallax measurements from Gaia DR3, 7 BDs show significant differences in their radius estimate or an improvement in the radius uncertainty. This has important implications for how these BDs are used to test substellar evolutionary models in the mass-radius diagram. The remaining 4 BDs show mass-radius estimates that are consistent with their previous pre-Gaia DR3 measurements. The 7 BDs that show significant deviation from the original mass-radius measurements are AD 3116b, CoRoT-3b, CoRoT-15b, EPIC 201702477b, Kepler-39b, KOI-205b, and KOI-415b. Of these, AD 3116b is a known member of the Praesepe cluster at an age of 600 Myr. Additionally, some of the previously smallest known transiting BDs, KOI-205b and KOI-415b, are not as small as once thought, leaving the mass-radius region for the very oldest BDs relatively sparse as a result of this work.
