PHANGS-HST-Halpha 调查：面向哈勃太空站的近距离星系中暖离子气体物理学高角分辨率观测
星系天体物理
2025-03-25 v1
摘要
PHANGS项目正在组建一套完整的、跨波段的近距离(~5-20 Mpc)巨型星形成星系的数据集，以支持多相、多尺度的调查星际形成和星系演化的过程。迄今为止，大型调查项目已提供分子气体(CO)立方数据（ALMA）、光学IFU光谱（VLT/MUSE）、高分辨率NUV-光学成像（HST五个宽带滤镜）以及红外成像（JWST NIRCAM+MIRI 滤镜）。本文介绍了PHANGS-HST-Halpha，这一获得了(~2-10 pc)高分辨率、窄带成像（F658N或F657N滤镜）的哈勃太空站WFC3相机，用于观测前19个在四个PHANGS大型项目中共同观测的星系中的暖离子气体。我们总结了数据减压过程，详细讨论了如何生产flux校准、伽马星系消除校正、连续光减法Halpha图。我们使用PHANGS-MUSE IFU光谱数据对HST-Halpha图进行背景减法，并确定每个星系的[NII]校正因子。我们描述了公开数据产品，并概述了由PHANGS-HST-Halpha观测所启发的几个关键科学案例。
关键词
引用
@article{arxiv.2503.18791,
title = {The PHANGS-HST-Halpha Survey: Warm Ionized Gas Physics at High Angular resolution in Nearby GalaxieS with the Hubble Space Telescope},
author = {Rupali Chandar and Ashley T. Barnes and David A. Thilker and Miranda Caputo and Matthew R. Floyd and Adam K. Leroy and Leonardo Ubeda and Janice C. Lee and Médéric Boquien and Daniel Maschmann and Francesco Belfiore and Kathryn Kreckel and Simon C. O. Glover and Ralf S. Klessen and Brent Groves and Daniel A. Dale and Eva Schinnerer and Eric Emsellem and Erik Rosolowsky and Frank Bigiel and Guillermo Blanc and Melanie Chevance and Enrico Congiu and Oleg V. Egorov and Chris Faesi and Kathryn Grasha and Kirsten L. Larson and Laura A. Lopez and Angus Mok and Justus Newmann and Eve Ostriker and Alessandro Razza and Patricia S'anchez-Bl'azquez and Franesco Santoro and Kiayi Sun and Antonio Usero and Elizabeth Watkins and Bradley C. Whitmore and Thomas G. Williams},
journal= {arXiv preprint arXiv:2503.18791},
year = {2025}
}
备注
published in the Astronomical Journal