A giant galaxy in the young Universe with a massive ring
dc.contributor.author | Yuan, Tiantian | |
dc.contributor.author | Elagali, A. | |
dc.contributor.author | Labbe, Ivo | |
dc.contributor.author | Kacprzak, Glenn | |
dc.contributor.author | Lagos , Claudia del P. | |
dc.contributor.author | Alcorn , Leo Y. | |
dc.contributor.author | Cohn, Jonathan H. | |
dc.contributor.author | Tran , Kim-Vy H. | |
dc.contributor.author | Glazebrook , Karl | |
dc.contributor.author | Groves, Brent | |
dc.contributor.author | Freeman, Kenneth | |
dc.contributor.author | Spitler , Lee R. | |
dc.date.accessioned | 2022-07-15T05:03:20Z | |
dc.date.available | 2022-07-15T05:03:20Z | |
dc.date.issued | 2020-05-25 | |
dc.date.updated | 2021-08-01T08:22:42Z | |
dc.description.abstract | In the local (redshift z≈ 0) Universe, collisional ring galaxies make up only ~0.01% of galaxies1 and are formed by head-on galactic collisions that trigger radially propagating density waves2-4. These striking systems provide key snapshots for dissecting galactic disks and are studied extensively in the local Universe. However, not much is known about distant (z> 0.1) collisional rings10-14. Here we present a detailed study of a ring galaxy at a look-back time of 10.8 Gyr (z= 2.19). Compared with our Milky Way, this galaxy has a similar stellar mass, but has a stellar half-light radius that is 1.5-2.2 times larger and is forming stars 50 times faster. The extended, diffuse stellar light outside the star-forming ring, combined with a radial velocity on the ring and an intruder galaxy nearby, provides evidence for this galaxy hosting a collisional ring. If the ring is secularly evolved15,16, the implied large bar in a giant disk would be inconsistent with the current understanding of the earliest formation of barred spirals17-21. Contrary to previous predictions10-12, this work suggests that massive collisional rings were as rare 11 Gyr ago as they are today. Our discovery offers a unique pathway for studying density waves in young galaxies, as well as constraining the cosmic evolution of spiral disks and galaxy groups. | en_AU |
dc.description.sponsorship | This research was supported by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013. | en_AU |
dc.format.mimetype | application/pdf | en_AU |
dc.identifier.citation | Yuan, T., Elagali, A., Labbé, I. et al. A giant galaxy in the young Universe with a massive ring. Nat Astron 4, 957–964 (2020). https://doi.org/10.1038/s41550-020-1102-7 | en_AU |
dc.identifier.issn | 2397-3366 | en_AU |
dc.identifier.uri | http://hdl.handle.net/1885/268870 | |
dc.language.iso | en_AU | en_AU |
dc.provenance | https://v2.sherpa.ac.uk/id/publication/35033..."Author accepted manuscript can be made open access on institutional repository after 6 month embargo" from SHERPA/RoMEO site (as at 15.7.2022). | en_AU |
dc.publisher | Nature Publishing Group | en_AU |
dc.relation | http://purl.org/au-research/grants/arc/CE170100013 | en_AU |
dc.rights | © 2020 The Author(s), under exclusive licence to Springer Nature Limited | en_AU |
dc.source | Nature Astronomy | en_AU |
dc.title | A giant galaxy in the young Universe with a massive ring | en_AU |
dc.type | Journal article | en_AU |
dcterms.accessRights | Open Access | en_AU |
dcterms.dateAccepted | 2020-04-09 | |
local.bibliographicCitation.lastpage | 964 | en_AU |
local.bibliographicCitation.startpage | 957 | en_AU |
local.contributor.affiliation | Yuan , Tiantian, Swinburne University of Technology | en_AU |
local.contributor.affiliation | Elagali, A., University of Western Australia | en_AU |
local.contributor.affiliation | Labbe, Ivo, Swinburne University of Technology | en_AU |
local.contributor.affiliation | Kacprzak, Glenn, Swinburne University of Technology | en_AU |
local.contributor.affiliation | Lagos , Claudia del P., University of Western Australia | en_AU |
local.contributor.affiliation | Alcorn , Leo Y., York University | en_AU |
local.contributor.affiliation | Cohn, Jonathan H., Texas A&M University | en_AU |
local.contributor.affiliation | Tran , Kim-Vy H., Texas A&M University | en_AU |
local.contributor.affiliation | Glazebrook , Karl, Swinburne University of Technology | en_AU |
local.contributor.affiliation | Groves, Brent, College of Science, ANU | en_AU |
local.contributor.affiliation | Freeman, Kenneth, College of Science, ANU | en_AU |
local.contributor.affiliation | Spitler , Lee R., Macquarie University | en_AU |
local.contributor.authoremail | u9816125@anu.edu.au | en_AU |
local.contributor.authoruid | Groves, Brent, u9816125 | en_AU |
local.contributor.authoruid | Freeman, Kenneth, u7000399 | en_AU |
local.description.notes | Imported from ARIES | en_AU |
local.identifier.absfor | 510103 - Cosmology and extragalactic astronomy | en_AU |
local.identifier.ariespublication | a383154xPUB13563 | en_AU |
local.identifier.citationvolume | 4 | en_AU |
local.identifier.doi | 10.1038/s41550-020-1102-7 | en_AU |
local.identifier.scopusID | 2-s2.0-85085281459 | |
local.identifier.uidSubmittedBy | a383154 | en_AU |
local.publisher.url | https://www.nature.com/ | en_AU |
local.type.status | Accepted Version | en_AU |
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