PMAS observing campaign at Calar Alto 3.5m Telescope "Initial conditions for Lyman-alpha radiative transfer in galaxies"

Calar Alto 3.5m 望远镜的 PMAS 观测活动“星系中莱曼-α 辐射传输的初始条件”

• 批准号: 376489717
• 负责人: Professor Dr. Martin Matthias Roth
• 金额: --
• 依托单位: Leibniz-Institut für Astrophysik Potsdam (AIP)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/376489717?language=en
• 关键词: PMAS; observing; campaign; Calar; Alto

Ly-alpha is a prime target in high-z surveys studying cosmology and galaxy formation, but Ly-alpha radiation transfer physics complicate the interpretation of those samples. We already demonstrated that PMAS H-alpha kinematic maps in concert with UV imaging-, UV spectroscopy and 21cm HI observations are vital to build a coherent empirical picture of Ly-alpha radiative transfer in galaxies. Spectrophotometry of galaxies in H-alpha trace directly the intrinsic Ly-alpha radiation field and thus constrain the initial conditions of the Ly-alpha radiative transfer. We are planning to complete our PMAS observational campaign of the Extended Ly-alpha Reference Sample - a legacy survey of 28 coherently selected nearby laboratory galaxies imaged with HST in Ly-alpha by observing the remaining 10 galaxies.

Ly-Alpha是研究宇宙学和星系形成的高Z调查中的主要目标，但是Ly-Alpha辐射转移物理学使这些样品的解释变得复杂。我们已经证明，与紫外线成像，紫外线光谱和21厘米HI观测值的PMA H-Alpha运动图合作，对于建立星系中Ly-Alpha辐射转移的相干经验图是至关重要的。 H-Alpha中星系的分光光度法直接跟踪固有的Ly-Alpha辐射场，从而限制了Ly-Alpha辐射转移的初始条件。我们计划完成扩展Ly-Alpha参考样本的PMA观察活动 - 对与HST在Ly-Alpha中成像的28个相干选择的附近实验室星系相干选择的旧调查，通过观察其余10个星系。

项目成果

IFU investigation of possible Lyman continuum escape from Mrk 71/NGC 2366

IFU 对 Mrk 71/NGC 2366 可能的莱曼连续逃逸的调查

• DOI: 10.1051/0004-6361/201834838
• 发表时间: 2019
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Micheva;Herenz;Östlin;Girichidis
• 通讯作者: Girichidis