Repository logo
 

The PUMA project. III. Incidence and properties of ionised gas disks in ULIRGs, associated velocity dispersion and its dependence on starburstiness

Simple item page
cam.depositDate2022-03-09
cam.issuedOnline2022-06-23
cam.orpheus.counter10
cam.orpheus.successWed Aug 03 09:45:31 BST 2022 - Embargo updated
dc.contributor.authorPerna, M
dc.contributor.authorArribas, S
dc.contributor.authorColina, L
dc.contributor.authorSantaella, M Pereira
dc.contributor.authorLamperti, I
dc.contributor.authorTeodoro, E Di
dc.contributor.authorÜbler, H
dc.contributor.authorCostantin, L
dc.contributor.authorMaiolino, R
dc.contributor.authorCresci, G
dc.contributor.authorBellocchi, E
dc.contributor.authorCatalán-Torrecilla, C
dc.contributor.authorCazzoli, S
dc.contributor.authorLópez, J Piqueraz
dc.contributor.orcidMaiolino, Roberto [0000-0002-4985-3819]
dc.date.accessioned2022-03-11T00:30:46Z
dc.date.available2022-03-11T00:30:46Z
dc.date.issued2022
dc.date.updated2022-03-09T22:29:09Z
dc.description.abstractA classical scenario suggests that ULIRGs transform colliding spiral galaxies into a spheroid dominated early-type galaxy. Recent high-resolution simulations have instead shown that, under some circumstances, rotation disks can be preserved during the merging process or rapidly regrown after coalescence. Our goal is to analyze in detail the ionised gas kinematics in a sample of ULIRGs to infer the incidence of gas rotational dynamics in late-stage interacting galaxies and merger remnants. We analysed MUSE data of a sample of 20 nearby (z<0.165) ULIRGs, as part of the "Physics of ULIRGs with MUSE and ALMA" (PUMA) project. We found that 27% individual nuclei are associated with kpc-scale disk-like gas motions. The rest of the sample displays a plethora of gas kinematics, dominated by winds and merger-induced flows, which make the detection of rotation signatures difficult. On the other hand, the incidence of stellar disk-like motions is ~2 times larger than gaseous disks, as the former are probably less affected by winds and streams. The eight galaxies with a gaseous disk present relatively high intrinsic gas velocity dispersion (sigma = 30-85 km/s), rotationally-supported motions (with gas rotation velocity over velocity dispersion vrot/sigma > 1-8), and dynamical masses in the range (2-7)x1e10 Msun. By combining our results with those of local and high-z disk galaxies from the literature, we found a significant correlation between sigma and the offset from the main sequence (MS), after correcting for their evolutionary trends. Our results confirm the presence of kpc-scale rotating disks in interacting galaxies and merger remnants, with an incidence going from 27% (gas) to ~50% (stars). The ULIRGs gas velocity dispersion is up to a factor of ~4 higher than in local normal MS galaxies, similar to high-z starbursts as presented in the literature.
dc.identifier.doi10.17863/CAM.82307
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/334870
dc.language.isoeng
dc.publisherEDP Sciences
dc.publisher.departmentDepartment of Physics
dc.publisher.urlhttp://dx.doi.org/10.1051/0004-6361/202142659
dc.rightsAll Rights Reserved
dc.rights.urihttp://www.rioxx.net/licenses/all-rights-reserved
dc.subjectastro-ph.GA
dc.subjectastro-ph.GA
dc.titleThe PUMA project. III. Incidence and properties of ionised gas disks in ULIRGs, associated velocity dispersion and its dependence on starburstiness
dc.typeArticle
dcterms.dateAccepted2022-02-08
prism.publicationNameAstronomy and Astrophysics: a European journal
pubs.funder-project-idScience and Technology Facilities Council (ST/M001172/1)
pubs.funder-project-idEuropean Research Council (695671)
pubs.funder-project-idRoyal Society (RSRP\R1\211056)
pubs.licence-display-nameApollo Repository Deposit Licence Agreement
pubs.licence-identifierapollo-deposit-licence-2-1
rioxxterms.typeJournal Article/Review
rioxxterms.versionAM
rioxxterms.versionofrecord10.1051/0004-6361/202142659

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
2202.02336v1.pdf
Size:
14.17 MB
Format:
Adobe Portable Document Format
Description:
Accepted version
Licence
http://www.rioxx.net/licenses/all-rights-reserved
Download

Collections

Cambridge University Research Outputs