AI 中文总结
本研究利用Gaia DR3数据，通过BANYAN-Sigma算法在150秒差距范围内识别出3153个邻近年轻移动星群候选体，其中含1651个新候选体，还发现51颗带红外过剩的潜在盘候选体，凸显需更稳健的年龄分析技术。
AI 中文摘要
移动星群是引力未束缚的恒星集合，分布在天空的大片区域，其成员身份的确定颇具挑战，分析恒星的三维空间运动是识别其成员的方法之一。尽管过去已有多项研究，但目前仍缺乏可靠且结论明确的移动星群恒星表。本研究的目标是利用Gaia数据发布3（DR3）的最新科学数据，提供太阳邻域内邻近年轻移动星群（NYMG）候选体的最新更新表并研究其性质。我们利用Gaia DR3在150秒差距范围内搜索了12个NYMG的候选体，采用贝叶斯算法BANYAN-Sigma确定成员身份，最终编制了包含3153个NYMG候选体的总表，其中1651个为新候选体。我们还利用本研究最新的NYMG综合表评估了文献定义的“Good-box”判据的可信度，利用Gaia DR3测光数据均匀估算了NYMG候选体的年龄。分析显示，NYMG候选体在色-星等图（CMDs）上呈现出较大的离散度，导致等时线拟合得到的年龄范围很宽。此外，我们开展了红外（IR）过剩分析，以在最终样本中识别盘候选体，通过光谱能量分布（SED）分析发现51颗恒星存在红外过剩。本研究利用Gaia DR3提供了太阳邻域150秒差距内所有NYMG候选体的广泛包容性列表，等时线拟合得到的宽年龄范围凸显了需要更稳健的年龄分析技术来准确确定NYMG成员的年龄，51颗恒星存在红外过剩证实了盘的存在，表明它们可能是系外行星探测的潜在候选体。
英文摘要
Moving groups, which are gravitationally unbound collections of stars spread over large portions of the sky, pose challenges to their identification. Analyzing the three-dimensional spatial motion of stars is one method to identify their members. Despite several studies in the past, a reliable and conclusive catalog of moving group stars is currently lacking. Our objective is to present a most recent and updated catalog of nearby young moving group (NYMG) candidates in the solar neighborhood and investigate their properties using updated science data from the Gaia Data Release 3 (DR3). We searched for candidates of twelve NYMGs within a distance of 150 pc using Gaia DR3. To determine the membership, we employed the Bayesian algorithm BANYAN-Sigma. We compiled a total list of 3,153 NYMG candidates, of which 1,651 were new candidates. We also assessed the credibility of the literature defined 'Good-box' criterion with the latest comprehensive catalog of NYMGs from our study. We homogeneously estimated the ages of the NYMG candidates using Gaia DR3 photometry data. The analysis revealed that our NYMG candidates display a large scatter on the CMDs resulting in a large range of estimated ages from isochrones. Additionally, we conducted an infrared (IR) excess analysis to identify disk candidates among our final sample. Our spectral energy distribution (SED) analysis found 51 stars with IR excess. We present a largely inclusive list of all the NYMG candidates within 150 pc of Solar neighbourhood using Gaia DR3. The wide range of ages obtained from isochrone fitting underscores the need for more robust age analysis techniques to accurately determine the ages of NYMG members. The presence of IR excess in the 51 stars confirms the existence of disks indicating that they could be potential candidates for exoplanet detections.
Comments15 pages, 8 figures, 2 tables, Accepted for publication in Journal of Astronomy and Astrophysics
