The production and escape of ionizing photons from galaxies over cosmic time (Astro2020 Science White Paper)

The ionizing photons produced by massive stars are key actors in galaxy evolution. Ionizing photon production and escape is poorly understood. Improved space-based, spatially-resolved, multiplexed spectroscopic capabilities covering observed wavelengths of 1000 to 3000 Angstrom, in concert with spec...

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Bibliographic Details
Published in:arXiv.org 2019-05
Main Authors: Rigby, Jane R, Berg, Danielle, Bordoloi, Rongmon, Chisholm, John, Florian, Michael, Hayes, Matthew, Gladders, Michael, James, Bethan, Malhotra, Sangeeta, Oey, Sally, O'Meara, John, Rivera-Thorsen, T Emil, Keren, Sharon
Format: Article
Language:English
Subjects:
Galactic evolution
Galaxies
Massive stars
Photons
Populations
Stars & galaxies
Stellar evolution
Online Access:Get full text
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Summary:The ionizing photons produced by massive stars are key actors in galaxy evolution. Ionizing photon production and escape is poorly understood. Improved space-based, spatially-resolved, multiplexed spectroscopic capabilities covering observed wavelengths of 1000 to 3000 Angstrom, in concert with spectroscopy from the ELTs and JWST, would lead to definitive answers as to how ionizing photons are produced and leaked, what populations of galaxies are responsible for ionizing photon leakage, what determines whether escape is possible, and how ionizing galaxy populations evolve over cosmic time.
ISSN:2331-8422