SDSS-V Local Volume Mapper (LVM)：科学动机与项目概述
星系天体物理
2024-05-06 v1
摘要
我们介绍Sloan Digital Sky Survey V (SDSS-V) Local Volume Mapper (LVM)。LVM是对银河系、马格纳尔云以及一组局部体积星系的全景光谱测绘项目，旨在将单个反馈源（尺度为pc）的能量、动量和化学元素注入星际介质（ISM）的区域，与其在更大尺度（尺度为kpc）的离子化ISM性质相结合。该4年计划在空间分辨率为0.05至1 pc的南半球银河系盘上、10 pc分辨率的马格纳尔云以及更大的尺度覆盖超过4300平方度的天空，获取超过5500万个光谱。它采用全新的天枪支架天体镜头系统，配备16厘米透镜望远镜、透镜阵列光纤和光谱仪器，覆盖3600-9800Å，分辨率约为4000。超大视场IFU直径为0.5度，包含1801个六边形排列的35.3 arcsec孔径光纤。天枪支架望远镜允许光纤系统完全固定，避免了传统光纤输入所见的线Spread Function不稳定问题。从科学角度看，LVM在气体云尺度上解析能量、动量和化学元素的注入区域，同时绘制能量通过冷却、冲击、湍流、 Bulk流等方式被耗尽的路径，从而覆盖更大的尺度。这种局部与全局视图使我们能够约束调节恒星反馈如何与银河运动学和盘面结构（如气旋臂和气体的内外流动）相耦合的物理过程。
引用
@article{arxiv.2405.01637,
title = {The SDSS-V Local Volume Mapper (LVM): Scientific Motivation and Project Overview},
author = {Niv Drory and Guillermo A. Blanc and Kathryn Kreckel and Sebastian F. Sanchez and Alfredo Mejia-Narvaez and Evelyn J. Johnston and Amy M. Jones and Eric W. Pellegrini and Nicholas P. Konidaris and Tom Herbst and Jose Sanchez-Gallego and Juna A. Kollmeier and Florence de Almeida and Jorge K. Barrera-Ballesteros and Dmitry Bizyaev and Joel R. Brownstein and Mar Canal i Saguer and Brian Cherinka and Maria-Rosa L. Cioni and Enrico Congiu and Maren Cosens and Bruno Dias and John Donor and Oleg Egorov and Evgeniia Egorova and Cynthia S. Froning and Pablo Garcia and Simon C. O. Glover and Hannah Greve and Maximilian Haeberle and Kevin Hoy and Hector Ibarra and Jing Li and Ralf S. Klessen and Dhanesh Krishnarao and Nimisha Kumari and Knox S. Long and Jose Eduardo Mendez-Delgado and Silvia Anastasia Popa and Solange Ramirez and Hans-Walter Rix and Aurora Mata Sanchez and Ravi Sankrit and Natascha Sattler and Conor Sayres and Amrita Singh and Guy Stringfellow and Stefanie Wachter and Elizabeth Jayne Watkins and Tony Wong and Aida Wofford},
journal= {arXiv preprint arXiv:2405.01637},
year = {2024}
}
备注
29 pages, 12 figures, accepted for publication in The Astronomical Journal