A Review of Recent Observations of Galactic Winds Driven by Star Formation

Galaxy-scale outflows of gas, or galactic winds (GWs), driven by energy from star formation are a pivotal mechanism for regulation of star formation in the current model of galaxy evolution. Observations of this phenomenon have proliferated through the wide application of old techniques on large sam...

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Main Author: David S. N. Rupke
Format: Article
Language:English
Published: MDPI AG 2018-12-01
Series:Galaxies
Subjects:
Online Access:https://www.mdpi.com/2075-4434/6/4/138
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author David S. N. Rupke
author_facet David S. N. Rupke
author_sort David S. N. Rupke
collection DOAJ
description Galaxy-scale outflows of gas, or galactic winds (GWs), driven by energy from star formation are a pivotal mechanism for regulation of star formation in the current model of galaxy evolution. Observations of this phenomenon have proliferated through the wide application of old techniques on large samples of galaxies, the development of new methods, and advances in telescopes and instrumentation. I review the diverse portfolio of direct observations of stellar GWs since 2010. Maturing measurements of the ionized and neutral gas properties of nearby winds have been joined by exciting new probes of molecular gas and dust. Low-<i>z</i> techniques have been newly applied in large numbers at high <i>z</i>. The explosion of optical and near-infrared 3D imaging spectroscopy has revealed the complex, multiphase structure of nearby GWs. These observations point to stellar GWs being a common feature of rapidly star-forming galaxies throughout at least the second half of cosmic history, and suggest that scaling relationships between outflow and galaxy properties persist over this period. The simple model of a modest-velocity, biconical flow of multiphase gas and dust perpendicular to galaxy disks continues to be a robust descriptor of these flows.
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spelling doaj.art-63040328a3054b21ab6b968235f0a9b62022-12-22T02:16:32ZengMDPI AGGalaxies2075-44342018-12-016413810.3390/galaxies6040138galaxies6040138A Review of Recent Observations of Galactic Winds Driven by Star FormationDavid S. N. Rupke0Department of Physics, Rhodes College, Memphis, TN 38112, USAGalaxy-scale outflows of gas, or galactic winds (GWs), driven by energy from star formation are a pivotal mechanism for regulation of star formation in the current model of galaxy evolution. Observations of this phenomenon have proliferated through the wide application of old techniques on large samples of galaxies, the development of new methods, and advances in telescopes and instrumentation. I review the diverse portfolio of direct observations of stellar GWs since 2010. Maturing measurements of the ionized and neutral gas properties of nearby winds have been joined by exciting new probes of molecular gas and dust. Low-<i>z</i> techniques have been newly applied in large numbers at high <i>z</i>. The explosion of optical and near-infrared 3D imaging spectroscopy has revealed the complex, multiphase structure of nearby GWs. These observations point to stellar GWs being a common feature of rapidly star-forming galaxies throughout at least the second half of cosmic history, and suggest that scaling relationships between outflow and galaxy properties persist over this period. The simple model of a modest-velocity, biconical flow of multiphase gas and dust perpendicular to galaxy disks continues to be a robust descriptor of these flows.https://www.mdpi.com/2075-4434/6/4/138galactic windsfeedbackoutflowsstar formation
spellingShingle David S. N. Rupke
A Review of Recent Observations of Galactic Winds Driven by Star Formation
Galaxies
galactic winds
feedback
outflows
star formation
title A Review of Recent Observations of Galactic Winds Driven by Star Formation
title_full A Review of Recent Observations of Galactic Winds Driven by Star Formation
title_fullStr A Review of Recent Observations of Galactic Winds Driven by Star Formation
title_full_unstemmed A Review of Recent Observations of Galactic Winds Driven by Star Formation
title_short A Review of Recent Observations of Galactic Winds Driven by Star Formation
title_sort review of recent observations of galactic winds driven by star formation
topic galactic winds
feedback
outflows
star formation
url https://www.mdpi.com/2075-4434/6/4/138
work_keys_str_mv AT davidsnrupke areviewofrecentobservationsofgalacticwindsdrivenbystarformation
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