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What drives the [CII]/FIR deficit in submillimeter galaxies?

Published online by Cambridge University Press:  04 June 2020

Matus Rybak Open the ORCID record for Matus Rybak [Opens in a new window] ,
J. A. Hodge ,
G. Calistro Rivera  and
ALESS Collaboration
Matus Rybak
Affiliation:
Leiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CALeiden, the Netherlands email: mrybak@strw.leidenuniv.nl
J. A. Hodge
Affiliation:
Leiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CALeiden, the Netherlands email: mrybak@strw.leidenuniv.nl
G. Calistro Rivera
Affiliation:
Leiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CALeiden, the Netherlands email: mrybak@strw.leidenuniv.nl
ALESS Collaboration
Affiliation:
Leiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CALeiden, the Netherlands email: mrybak@strw.leidenuniv.nl
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Abstract

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Submillimeter galaxies at redshift z⩾1 show a pronounced [CII]/FIR deficit down to sub-kpc scales; however, the physical origin of this deficit remains poorly understood. We use resolved ALMA observations of the [CII], FIR and CO(3–2) emission in two z = 3 SMGs to distinguish between the different proposed scenarios; the thermal saturation of the [CII] emission is the most likely explanation.

Keywords

galaxies: high-redshiftgalaxies: ISMsubmillimeter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S352: Uncovering Early Galaxy Evolution in the ALMA and JWST Era , June 2019 , pp. 293 - 294
Copyright
© International Astronomical Union 2020

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