AI 中文总结
探讨恒星初始质量函数起源，回顾相关历史探索，通过 CMF4All 整合多观测核心目录，发现高质量 CMF 斜率与最小拟合质量有关且早期样本斜率更陡，为后续研究指明方向。
AI 中文摘要
恒星初始质量函数（IMF）的起源仍是天文学核心问题之一。近三十年前，核心质量函数（CMF）与 IMF 的相似性促使学界认为恒星质量谱可能在分子云核早期就被印记，后通过简单效率因子映射到 IMF。但如今逐渐明确这种映射涉及多个非线性物理过程。本纪要先回顾理解 IMF 起源的历史探索，再为当前 CMF 测量建立共识做铺垫。通过公共 Python 包 CMF4All 将不同环境和演化阶段的观测核心目录整合到共同框架。研究发现推断的高质量 CMF 斜率强烈依赖采用的最小拟合质量，早期样本中斜率明显更陡，表明最高质量处质量函数可能在演化。最后概述未来方向，呼吁观测、数值模拟和理论方面加大努力。
英文摘要
The origin of the stellar initial mass function (IMF) remains one of the central questions in astronomy. Nearly three decades ago, the resemblance between the core mass function (CMF) and the IMF inspired the community to suggest that the stellar mass spectrum might be imprinted early in molecular-cloud cores and then mapped to the IMF through a simple efficiency factor. It has become gradually clear, however, that this apparent mapping involves multiple non-linear physical processes. Motivated by the spirit of the CMF2IMF conference at ESO Garching, this memo first reviews the historical quest to understand the origin of the IMF, and then sets the stage for building a shared understanding of current CMF measurements. We therefore compile several observational core catalogues at various environments and evolutionary stages into a common framework, implemented in the public Python package CMF4All. We show that the inferred high-mass CMF slope depends strongly on the adopted minimum fitting mass. A significantly steeper slope is observed in the early-stage sample, indicating a potentially evolving mass function at the highest masses. We conclude by outlining future directions to spare more efforts for both the observational, numerical simulation, and theoretical sides.
CommentsIn the spirit of the CMF2IMF conference at ESO Garching, the self-organized memo is to review CMF efforts, discussions, and future perspectives. The CMF4All code for wider community usage can be found at https://github.com/XFengwei/CMF4All
