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Atomic and Molecular Gas Outflows in FIR Bright QSOs at High-z

Published online by Cambridge University Press:  28 October 2024

Kirsty M. Butler Open the ORCID record for Kirsty M. Butler [Opens in a new window]
Kirsty M. Butler*
Affiliation:
Institut de Radioastronomie Millimétrique (IRAM), 300 rue de la Piscine, 38400 Saint-Martin-d’Héres, France Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, the Netherlands
*
email: butler@iram.fr
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Abstract

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Feedback and outflows associated with a quasar phase are expected to be critical in quenching the most massive galaxies at high-z. Observations targeting the cool molecular and atomic phases, which dominate the mass and momentum budget of massive galaxy outflows and remove the direct fuel for star formation are, however, severely limited in high-z QSO hosts. We discuss two recent ALMA programs: one targeting molecular outflows in 3 z ∼ 6 QSO hosts using the OH 119 μm absorption line and another targeting the diffuse, predominantly atomic gas in the halos surrounding 5 QSO host between z ∼ 2 – 4 using the OH+(11 – 10) absorption line. Outflows are successfully detected in both samples and compared with outflows driven by high-z star-forming galaxies observed in the same lines. Both studies indicate that observing QSOs during the blow-out phase is crucial for studying the impact of the active nucleus on the ejection of gas from the host galaxy.

Keywords

galaxies: high-redshiftgalaxies: starburstquasars: general
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 19 , Symposium S378: Black Hole Winds at All Scales , December 2023 , pp. 72 - 75
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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