SPHEREx 冰源目标列表 (SPLICES)
星系天体物理
2025-01-31 v1
摘要
SPHEREx 任务的首要目标之一是了解分子如 H2O、CO2 以及其他挥发性化合物在行星系统形成早期阶段的来源。由于绝大多数化合物（通常超过 95%）在此类系统中以固体相存在而非气相，观测策略略显不寻常。具体而言，SPHEREx 将针对银河系内大量遮蔽源，观测这些物种的吸收特征，以背景光照为基准。SPHEREx 光谱 photometry 将为数百万颗遮蔽的银河系源（所有年龄和类型）测量冰柱密度。通过将这些柱密度与源年龄相关联，SPHEREx 任务将阐明这些分子是是在与其初生恒星系统一起在原位形成，还是在形成后在其他地方形成后被引入这些系统。为此，本文描述了 SPHEREx 冰源目标列表 (SPLICES) 第 7.1 版，包含约 860 万颗亮于 W2~12 Vega 星等的对象，主要覆盖银河系中太平面宽阔条带，但也包括高纬度分子云甚至麦�lea星云。
引用
@article{arxiv.2501.17797,
title = {The SPHEREx Target List of Ice Sources (SPLICES)},
author = {Matthew L. N. Ashby and Joseph L. Hora and Kiran Lakshmipathaiah and Sarita Vig and Rama Krishna Sai Subrahmanyam Gorthi and Miju Kang and Volker Tolls and Gary J. Melnick and Michael W. Werner and Brendan P. Crill and Daniel C. Masters and Carlos Contreras Pena and Jeong-Eun Lee and Jaeyeong Kim and Ho-Gyu Lee and Sung-Yong Yoon and Soung-Chul Yang and Nicholas Flagey and Bertrand Mennesson},
journal= {arXiv preprint arXiv:2501.17797},
year = {2025}
}
备注
Published by ApJ. 21 pages, 6 figures. This article documents the original version of SPLICES (7.1). The current version as well as the complete catalog is publicly available along with release notes documenting all additions and changes at the NASA/IPAC Infrared Science Archive (IRSA) at this URL: https://irsa.ipac.caltech.edu/data/SPHEREx/SPLICES/