AI 中文总结
介绍VAPOLA，首个关于AGN和Sgr A*的ALMA观测高级数据产品库。基于自动管道处理数据，通过用户友好网站提供即用数据，方便非专家用户分析，推动多领域研究，还提供相关参数和元数据。
AI 中文摘要
阿塔卡马大型毫米波/亚毫米波阵列（ALMA）是毫米和亚毫米波段最灵敏的干涉阵列。通过ALMA相位系统（APS），它能参与全球甚长基线干涉测量（VLBI）阵列，提高灵敏度和分辨率。然而，处理VLBI观测中APS模式下的ALMA数据是复杂任务。本文介绍VAPOLA，首个在线、多时期、多波段的高级数据产品库，基于自动管道处理完全校准的ALMA（QA2）数据，以最少用户干预生成科学就绪产品。库中含多种数据，通过用户友好网站提供即用数据，方便非专家用户进行高级科学分析，推动多方面科学研究，还提供源积分参数和校准元数据。
英文摘要
The Atacama Large Millimeter/submillimeter Array (ALMA) is the most sensitive interferometric array at millimeter and submillimeter wavelengths. Through the ALMA Phasing System (APS), it can participate in global Very Long Baseline Interferometry (VLBI) arrays, enhancing their sensitivity and resolution. However, processing and analzing the ALMA data obtained in APS mode during VLBI observations remains a complex task, requiring specialized expertise and time-consuming calibration and imaging procedures. In this paper, we present VAPOLA-the first online, multi-epoch, multi-band repository of high-level data products from ALMA observations of active galactic nuclei (AGN) and Sgr A* during global VLBI campaigns. Built on an automated pipeline that processes fully calibrated ALMA (QA2) data, generates science-ready products with minimal user intervention. The repository includes fully calibrated interferometric visibilities, full-Stokes images across individual and combined spectral windows, polarimetric and spectral index maps, as well as tabulated polarimetric parameters from visibility-domain polarization fitting. By offering ready-to-use data through a user-friendly web portal, VAPOLA enables non-expert users to perform advanced science analyses without needing in-depth knowledge of ALMA procedures. This resource will facilitate a broad range of scientific investigations, including the characterization of magnetic field properties in accretion flows and relativistic jets, the structure and kinematics of dusty and molecular tori in AGN, and absorption studies of the interstellar medium toward the Galactic Center. In addition, the dataset provides source-integrated parameters and calibration metadata essential for refining VLBI calibration and imaging workflows as well as for placing robust observational constraints on theoretical models of supermassive black holes and their environments.
CommentsAccepted in A&A, 07/06/2026
