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Challenges in modelling the rest-frame ultraviolet/optical spectra of galaxies at the high-redshift frontier

Published online by Cambridge University Press:  10 June 2020

Erik Zackrisson  and
Anton Vikaeus
Erik Zackrisson
Affiliation:
Observational Astrophysics, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden email: erik.zackrisson@physics.uu.se
Anton Vikaeus
Affiliation:
Observational Astrophysics, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden email: erik.zackrisson@physics.uu.se
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Abstract

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New challenges in the modelling of galaxy spectra are bound to emerge as upcoming telescopes like the James Webb Space Telescope will allow us to detect galaxies at fainter flux levels and higher redshifts than ever before. Here, we highlight three modelling problems that may become relevant for upcoming observations in the rest-frame ultraviolet/optical at the high-redshift frontier: stellar initial mass function sampling effects, Population III signatures and the leakage of ionizing radiation into the intergalactic medium.

Keywords

Galaxies: high-redshiftgalaxies: stellar contentISM: lines and bands

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