Chaotic and Clumpy Galaxy Formation in an Extremely Massive Reionization-era Halo
dc.contributor.author | Spilker, Justin S. | |
dc.contributor.author | Hayward, Christopher C. | |
dc.contributor.author | Marrone, Daniel P. | |
dc.contributor.author | Aravena, Manuel | |
dc.contributor.author | Béthermin, Matthieu | |
dc.contributor.author | Burgoyne, James | |
dc.contributor.author | Chapman, Scott C. | |
dc.contributor.author | Greve, Thomas R. | |
dc.contributor.author | Gururajan, Gayathri | |
dc.contributor.author | Hezaveh, Yashar D. | |
dc.contributor.author | Hill, Ryley | |
dc.contributor.author | Litke, Katrina C. | |
dc.contributor.author | Lovell, Christopher C. | |
dc.contributor.author | Malkan, Matthew A. | |
dc.contributor.author | Murphy, Eric J. | |
dc.contributor.author | Narayanan, Desika | |
dc.contributor.author | Phadke, Kedar A. | |
dc.contributor.author | Reuter, Cassie | |
dc.contributor.author | Stark, Antony A. | |
dc.contributor.author | Sulzenauer, Nikolaus | |
dc.contributor.author | Vieira, Joaquin D. | |
dc.contributor.author | Vizgan, David | |
dc.contributor.author | Weiß, Axel | |
dc.date.accessioned | 2022-04-12T12:15:01Z | |
dc.date.available | 2022-04-12T12:15:01Z | |
dc.date.issued | 2022-04-08 | |
dc.identifier.citation | Spilker , J S , Hayward , C C , Marrone , D P , Aravena , M , Béthermin , M , Burgoyne , J , Chapman , S C , Greve , T R , Gururajan , G , Hezaveh , Y D , Hill , R , Litke , K C , Lovell , C C , Malkan , M A , Murphy , E J , Narayanan , D , Phadke , K A , Reuter , C , Stark , A A , Sulzenauer , N , Vieira , J D , Vizgan , D & Weiß , A 2022 , ' Chaotic and Clumpy Galaxy Formation in an Extremely Massive Reionization-era Halo ' , Astrophysical Journal Letters , vol. 929 , no. 1 , L3 . https://doi.org/10.3847/2041-8213/ac61e6 | |
dc.identifier.issn | 2041-8205 | |
dc.identifier.other | Jisc: 227430 | |
dc.identifier.other | publisher-id: apjlac61e6 | |
dc.identifier.other | manuscript: ac61e6 | |
dc.identifier.other | other: aas37651 | |
dc.identifier.uri | http://hdl.handle.net/2299/25479 | |
dc.description | © 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/by/4.0/ | |
dc.description.abstract | Abstract: The SPT 0311–58 system at z = 6.900 is an extremely massive structure within the reionization epoch and offers a chance to understand the formation of galaxies at an extreme peak in the primordial density field. We present 70 mas Atacama Large Millimeter/submillimeter Array observations of the dust continuum and [C ii] 158 μm emission in the central pair of galaxies and reach physical resolutions of ∼100–350 pc, among the most detailed views of any reionization-era system to date. The observations resolve the source into at least a dozen kiloparsec-size clumps. The global kinematics and high turbulent velocity dispersion within the galaxies present a striking contrast to recent claims of dynamically cold thin-disk kinematics in some dusty galaxies just 800 Myr later at z ∼ 4. We speculate that both gravitational interactions and fragmentation from massive parent disks have likely played a role in the overall dynamics and formation of clumps in the system. Each clump individually is comparable in mass to other 6 < z < 8 galaxies identified in rest-UV/optical deep field surveys, but with star formation rates elevated by a factor of ~3-5. Internally, the clumps themselves bear close resemblance to greatly scaled-up versions of virialized cloud-scale structures identified in low-redshift galaxies. Our observations are qualitatively similar to the chaotic and clumpy assembly within massive halos seen in simulations of high-redshift galaxies. | en |
dc.format.extent | 8 | |
dc.format.extent | 988094 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astrophysical Journal Letters | |
dc.subject | 310 | |
dc.subject | Galaxies and Cosmology | |
dc.subject | High-redshift galaxies | |
dc.subject | Starburst galaxies | |
dc.title | Chaotic and Clumpy Galaxy Formation in an Extremely Massive Reionization-era Halo | en |
dc.contributor.institution | Department of Physics, Astronomy and Mathematics | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.3847/2041-8213/ac61e6 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true |