标题： TRENDS高对比度成像巡天。 第八部分。 基准目标汇编 显示英文标题

标题： The TRENDS High-contrast Imaging Survey. VIII. Compendium of Benchmark Objects

摘要： 昏暗恒星和亚恒星天体的物理性质通常依赖于间接的、基于模型的估算。 例如，棕矮星的质量通常通过年龄依赖的演化模型推断得出，但这些模型尚未得到适当的校准。 为了识别新的基准天体以检验低质量恒星和亚恒星模型，我们开展了全面的自适应光学巡天，作为TaRgetting bENchmark-objects（TRENS）计划中的一部分。 利用凯克高分辨率光谱仪的遗产径向速度测量数据，我们识别出几十颗恒星显示出长期的多普勒加速度。 我们展示了该计划的后续高对比度观测，并报告发现了31个与太阳型恒星共运动的伴星，以及11个强候选伴星，这些恒星具有精确测定的视差和金属丰度值。 这种类型的基准天体非常适合用于轨道确定、动力学质量估算以及独立的成分评估。 这一系列基准天体将成为一个方便的测试组，用以验证接近氢核聚变极限处的理论演化和大气模型。 显示英文摘要

摘要： The physical properties of faint stellar and substellar objects often rely on indirect, model-dependent estimates. For example, the masses of brown dwarfs are usually inferred using evolutionary models, which are age dependent and have yet to be properly calibrated. With the goal of identifying new benchmark objects to test low-mass stellar and substellar models, we have carried out a comprehensive adaptive optics survey as part of the TaRgetting bENchmark-objects with the Doppler Spectroscopy high-contrast imaging program. Using legacy radial velocity measurements from High Resolution Echelle Spectrometer at Keck, we have identified several dozen stars that show long-term Doppler accelerations. We present follow-up high-contrast observations from the campaign and report the discovery of 31 co-moving companions, as well as 11 strong candidate companions, to solar-type stars with well-determined parallax and metallicity values. Benchmark objects of this nature lend themselves to orbit determinations, dynamical mass estimates, and independent compositional assessment. This compendium of benchmark objects will serve as a convenient test group to substantiate theoretical evolutionary and atmospheric models near the hydrogen fusing limit.