发表机构
Gemini Observatory/NSF NOIRLab; Department of Physics, University of Warwick; Institute for Astronomy, University of Edinburgh, Royal Observatory; Institute of Astronomy, University of Cambridge; Astrophysics Group, Department of Physics, Imperial College London; Department of Astronomy & Astrophysics, University of Toronto; Department of Astronomy, School of Physics and Astronomy, Shanghai Jiao Tong Univer（吉米尼天文台/美国国家光学红外天文研究实验室; 华威大学物理系; 爱丁堡大学天文研究所皇家天文台; 剑桥大学天文研究所; 帝国理工学院物理系天体物理学组; 多伦多大学天文学与天体物理系; 上海交通大学物理与天文学院天文学系）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
利用DESI DR1数据发现宽双星中金属富集白矮星比例显著低于单星，表明双星抑制行星吸积或加速行星物质消耗。
AI 中文摘要
双星在银河系中很常见，理解恒星双星性如何影响行星系统的形成与演化是一个活跃的研究领域。在本研究中，我们使用宽双星中的金属富集白矮星作为长寿行星系统的示踪体。利用暗能量光谱仪器（DESI）的第一批数据，我们发现宽双星中冷金属富集白矮星的比例为9.8%±2.1%，显著低于（4.7σ）单星对照样本中的20.5%±0.9%。此外，我们初步发现金属富集程度与投影间距和白矮星有效温度存在依赖关系，其中富集比例在较小间距和较低温度下有所降低。这些发现表明，与单星相比，双星系统要么由于星子形成受到抑制而起始行星物质储备较小，要么在白矮星阶段初期行星物质消耗更为迅速。
英文摘要
Binary stars are common in the Galaxy, and understanding how stellar binarity influences the formation and evolution of planetary systems is an active area of research. In this study, we use metal-enriched white dwarfs in wide binaries as tracers of long-lived planetary systems. With Data Release 1 from the Dark Energy Spectroscopic Instrument (DESI), we find that the fraction of cool metal-enriched white dwarfs in wide binaries is 9.8\,$\pm$\,2.1\%, significantly lower (4.7\,$σ$) than the 20.5\,$\pm$\,0.9\% in a control sample of single systems. Furthermore, we identify a tentative dependence of metal enrichment on projected separation and white dwarf effective temperature, where enrichment fraction decreases at smaller separations and lower temperatures. These findings indicate that, compared to single stars, binary systems either start with smaller initial planetary reservoirs due to suppressed planetesimal formation or undergo more rapid depletion of planetary material during the initial part of the white dwarf stage.
Comments13 pages, 4 figures, 1 table, ApJ, in press
