The observable properties of cool winds from galaxies, AGN, and star clusters -II. 3D models for the multiphase wind of M82

dc.contributor.authorYuan, Yuxuan
dc.contributor.authorKrumholz, Mark
dc.contributor.authorMartin, Crystal L
dc.date.accessioned2024-01-16T22:22:05Z
dc.date.available2024-01-16T22:22:05Z
dc.date.issued2023
dc.date.updated2023-12-17T07:16:38Z
dc.description.abstractGalactic winds are a crucial player in galaxy formation and evolution, but observations of them have proven extraordinarily difficult to interpret, leaving large uncertainties even in basic quantities such as mass outflow rates. Here we present an analysis of the wind of the nearby dwarf starburst galaxy M82 using a semi-analytic model that is able to take advantage of the full three-dimensional information present in position–position–velocity data cubes measured in the H I 21-cm line, the CO J = 2 → 1 line, and the Hα line. Our best-fitting model produces position-dependent spectra in good agreement with the observations, and shows that the total wind mass flux in the atomic and molecular phases is ≈10 M⊙ yr−1 (corresponding to a mass loading factor of ≈2–3), with less than a factor of 2 uncertainty; the mass flux in the warm ionized phase is more poorly constrained, and may be comparable to or smaller than this. At least over the few kpc off the plane for which we trace the outflow, it appears to be a wind escaping the galaxy, rather than a fountain that falls back. Our fits require that clouds of cool gas entrained into the wind expand only modestly, suggesting they are confined by magnetic fields, radiative cooling, or a combination of both. Finally, we demonstrate that attempts to model the wind using simplifying assumptions such as instantaneous acceleration and a constant terminal wind speed can yield significantly erroneous results.en_AU
dc.description.sponsorshipCLM acknowledges support in part from the National Science Foundation grant AST-1817125. We also gratefully acknowledge the contribution of Mike Fitzpatrick who wrote a python script to byte swap the echelle IRAF images, making them readable on modern computers.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn00358711en_AU
dc.identifier.urihttp://hdl.handle.net/1885/311505
dc.language.isoen_AUen_AU
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/24618/..."published version can be archived in institutional repository" from SHERPA/RoMEO site as at 17/02/2024en_AU
dc.publisherOxford University Pressen_AU
dc.relationhttp://purl.org/au-research/grants/arc/FT180100375en_AU
dc.rights© 2022 The authorsen_AU
dc.sourceMonthly Notices of the Royal Astronomical Societyen_AU
dc.subjectmethods: analyticalen_AU
dc.subjectgalaxies: generalen_AU
dc.subjectgalaxies: ISMen_AU
dc.titleThe observable properties of cool winds from galaxies, AGN, and star clusters -II. 3D models for the multiphase wind of M82en_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue3en_AU
local.bibliographicCitation.lastpage4105en_AU
local.bibliographicCitation.startpage4084en_AU
local.contributor.affiliationYuan, Yuxuan, College of Science, ANUen_AU
local.contributor.affiliationKrumholz, Mark, College of Science, ANUen_AU
local.contributor.affiliationMartin, Crystal L, University of Californiaen_AU
local.contributor.authoremailu1000557@anu.edu.auen_AU
local.contributor.authoruidYuan, Yuxuan, u6772166en_AU
local.contributor.authoruidKrumholz, Mark, u1000557en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor510100 - Astronomical sciencesen_AU
local.identifier.absseo280120 - Expanding knowledge in the physical sciencesen_AU
local.identifier.ariespublicationa383154xPUB41533en_AU
local.identifier.citationvolume518en_AU
local.identifier.doi10.1093/mnras/stac3241en_AU
local.identifier.scopusID2-s2.0-85156180232
local.identifier.uidSubmittedBya383154en_AU
local.publisher.urlhttps://academic.oup.com/en_AU
local.type.statusPublished Versionen_AU

Downloads

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
stac3241.pdf
Size:
5.8 MB
Format:
Adobe Portable Document Format
Description:
Back to topicon-arrow-up-solid
 
APRU
IARU
 
edX
Group of Eight Member

Acknowledgement of Country

The Australian National University acknowledges, celebrates and pays our respects to the Ngunnawal and Ngambri people of the Canberra region and to all First Nations Australians on whose traditional lands we meet and work, and whose cultures are among the oldest continuing cultures in human history.


Contact ANUCopyrightDisclaimerPrivacyFreedom of Information

+61 2 6125 5111 The Australian National University, Canberra

TEQSA Provider ID: PRV12002 (Australian University) CRICOS Provider Code: 00120C ABN: 52 234 063 906