发表机构
Institute of Astronomy, Nicolaus Copernicus University in Toruń; Center for Astrophysical Surveys, National Center for Supercomputing Applications; Centro de Astrobiología (CAB), CSIC-INTA; Astronomical Institute of the Slovak Academy of Sciences; The Pennsylvania State University（托伦尼古拉·哥白尼大学天文学研究所; 国家超级计算应用中心天体物理调查中心; 西班牙国家航空航天技术研究所与最高科学研究委员会联合天体生物学中心; 斯洛伐克科学院天文研究所; 宾夕法尼亚州立大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究基于PTPS的21年观测数据，对16个SB1系统开展光谱与测光联合分析，新探测11颗恒星的低质量伴星，更新5个系统轨道，获3个系统真实质量，为行星巡天样本的双星研究提供数据支持。
AI 中文摘要
背景：宾夕法尼亚-托伦行星巡天（PTPS）自2004年起开展，观测约1000颗北半球恒星；径向速度（RV）振幅超过2 km s⁻¹的恒星构成备用子样本，用于用多仪器监测双星。目标：利用近21年的联合RV测量，搜寻与恒星或褐矮星伴星一致的多普勒信号，编制行星巡天样本中已知及未发表双星的星表。方法：分析联合RV测量数据，搜寻恒星伴星并获取已知及新双星系统的轨道解；同时从全天自动巡天（ASAS）的长期测光监测数据中搜寻周期，有盖亚（Gaia）天体测量数据时予以应用。结果：报告16个系统的长期RV监测结果：新探测到11颗恒星的低质量伴星，结合新数据与文献数据更新5个系统的轨道根数；对2个天体（TYC 3318-00789-1和TYC 3318-01538-1），发现存在活动或其他未见伴星影响的证据，可能源于谱线轮廓变化或未分辨的光谱污染；利用Gaia DR3非单星数据，获取样本中3个系统（TYC 1931-1040-1、TYC 3451-1449-1、TYC 3667-1636-1）的真实质量。
英文摘要
Context. The Pennsylvania-Toruń Planet Search, which operates on a sample of $\sim$1000 northern-hemisphere stars, has been underway since 2004. Stars with radial velocity (RV) amplitudes exceeding 2 km s$^{-1}$ represent a backup subprogram sample dedicated to monitoring binary stars with multiple instruments. Aims. We used almost 21 years of combined RV measurements to search for Doppler signals consistent with stellar or brown dwarf companions and to produce a catalog of both known and previously unpublished binary stars in our planet-search sample. Methods. We analyzed the combined RV measurements, searching for stellar companions and obtaining orbital solutions for both known and new binary systems. We also searched for periods in available long-term photometric monitoring data from All Sky Automated Survey (ASAS), and applied Gaia astrometric data whenever available. Results. We report the results of long-term RV monitoring of 16 systems: new detections of low-mass companions to 11 stars and updated orbital elements based on combined sets of our new and literature data for five systems. For two objects (TYC 3318-00789-1 and TYC 3318-01538-1), we find evidence of activity or the influence of another unseen companion, possibly due to line-profile variations or unresolved spectral contamination. We present true masses for three systems in our sample: TYC 1931-1040-1, TYC 3451- 1449-1, and TYC 3667-1636-1. We obtained these masses using Gaia DR3 non-single star data.
