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Galactic outflows at high spatial resolution via gravitational lensing

Published online by Cambridge University Press:  04 June 2020

Justin Spilker Open the ORCID record for Justin Spilker [Opens in a new window]
Justin Spilker*
Affiliation:
University of Texas at Austin, 2515 Speedway Stop C1400, Austin, TX 78712, USA email: spilkerj@gmail.com
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Abstract

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The completion of the Atacama Large Millimeter/submillimeter Array (ALMA) has led to the ability to make observations with unprecedented resolution at sub-millimeter wavelengths, allowing novel probes of the ISM and kinematics of high-redshift galaxies. Because they are magnified by foreground galaxies or clusters, gravitationally lensed galaxies allow the highest possible spatial resolution to be obtained, and/or a sharp reduction in the observing time required to detect faint objects or spectral lines. These benefits have made lensed galaxies useful benchmark systems for ALMA, enabling a wide variety of science cases. Here I focus in particular on spatially-resolved observations of massive galactic outflows in the very distant z > 4 universe, summarizing plausible tracers of the cold molecular phase of these outflows. The prospects of joint JWST and ALMA observations will be revolutionary, including the chance to take a full census of galactic outflows in multiple gas phases at matched spatial resolution.

Keywords

galaxies: high-redshiftgalaxies: formationgalaxies: ISM
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. 187 - 193
Copyright
© International Astronomical Union 2020

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