ALMA中心分子区勘探调查(III)：分子线数据减法及HNCO和HCO⁺数据
星系天体物理
2026-02-25 v1
摘要
ALMA中心分子区勘探调查(ACES)大型计划在3 mm(Band 3)上使用ALMA的12m、7m和Total Power阵列观测了银河系内约200 pc的内部区域。以约2"的角分辨率， ACES通过尘埃连续辐射和一系列分子线提供了中心分子区(CMZ)的多尺度视图。我们概述了ACES的分子线数据处理，并描述了首次数据发布。我们展示了HNCO(4-3)和HCO⁺(1-0)数据， 这些数据以0.2 km s⁻¹的高光谱分辨率被针对，以追踪CMZ中分子气体的运动学。HNCO和HCO⁺图与之前的单孔CMZ调查和离散ALMA观测的CMZ云进行比较，以展示数据的质量。我们强调了HCO⁺所追踪的平方尺度、线性吸收特征的普遍性。其起源尚未知晓， ACES提供了研究CMZ中这些神秘特征的首次机会。我们为所有45个ACES场释放HNCO和HCO⁺立方数据， 以及将所有场组合成CMZ连续马赛克的完整立方数据。我们另外提供这些完整马赛克的高级产品，包括积分强度、峰值强度、噪声和位置-速度图。这些产品为社区提供了巨大的历史价值， 提供了对CMZ密集气体物理和运动学结构的无与伦比的观察。
引用
@article{arxiv.2602.20276,
title = {ALMA Central molecular zone Exploration Survey (ACES) III: Molecular line data reduction and HNCO and HCO$^{+}$ data},
author = {Daniel L. Walker and Adam Ginsburg and Ashley T. Barnes and Xing Lu and Pei-Ying Hsieh and Álvaro Sánchez-Monge and Savannah R. Gramze and Nazar Budaiev and Marc W. Pound and Jaime E. Pineda and Alyssa Bulatek and Claire Cook and Jonathan D. Henshaw and Katharina Immer and Namitha Issac and Desmond Jeff and Fu-Heng Liang and Steven N. Longmore and Elisabeth A. C. Mills and Sergio Martín and Xing Pan and Thushara G. S. Pillai and Qizhou Zhang and John Bally and Cara Battersby and Laura Colzi and Paul T. P. Ho and Izaskun Jiménez-Serra and J. M. Diederik Kruijssen and Maya A. Petkova and Mattia C. Sormani and Robin G. Tress and Jennifer Wallace and J. Armijos-Abendaño and Lucia Armillotta and N. Bijas and Rojita Buddhacharya and Laura A. Busch and Natalie O. Butterfield and Mélanie Chevance and Samuel Crowe and Ana Karla Díaz-Rodríguez and Katarzyna M. Dutkowska and Christoph Federrath and Rubén Fedriani and Pablo García and Simon C. O. Glover and Qi-Lao Gu and H Perry Hatchfield and Rebecca J. Houghton and Yue Hu and Janik Karoly and Ralf S. Klessen and Mark R. Krumholz and Farideh Mazoochi and Francisco Nogueras-Lara and Dylan Paré and Denise Riquelme-Vásquez and Víctor M. Rivilla and Miriam G. Santa-Maria and Anika Schmiedeke and Yoshiaki Sofue and Volker Tolls and Q. Daniel Wang and Gwenllian M. Williams and Fengwei Xu and Suinan Zhang},
journal= {arXiv preprint arXiv:2602.20276},
year = {2026}
}
备注
Accepted for publication in MNRAS. Website is https://sites.google.com/view/aces-cmz/home and data release is linked from there. Pipeline code is at https://github.com/ACES-CMZ/reduction_ACES/releases/tag/2026-02-18