Galaxy growth in a massive halo in the first billion years of cosmic history
AuthorMarrone, Daniel P.
Spilker, J. S.
Hayward, C. C.
Vieira, J. D.
Ashby, M. L. N.
Bayliss, M. B.
Bothwell, M. S.
Carlstrom, J. E.
Chapman, S. C.
Crawford, T. M.
Cunningham, D. J. M.
De Breuck, C.
Fassnacht, C. D.
Gonzalez, A. H.
Greve, T. R.
Hezaveh, Y. D.
Litke, K. C.
Miller, T. B.
Morningstar, W. R.
Murphy, Eric J.
Phadke, K. A.
Rotermund, K. M.
Stark, A. A.
Strandet, M. L.
AffiliationUniv Arizona, Steward Observ
MetadataShow full item record
PublisherNATURE PUBLISHING GROUP
CitationMarrone, D. P., Spilker, J. S., Hayward, C. C., Vieira, J. D., Aravena, M., Ashby, M. L. N., ... & Carlstrom, J. E. (2018). Galaxy growth in a massive halo in the first billion years of cosmic history. Nature, 553(7686), 51–54, doi:10.1038/nature24629
RightsCopyright © 2017, Springer Nature
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractAccording to the current understanding of cosmic structure formation, the precursors of the most massive structures in the Universe began to form shortly after the Big Bang, in regions corresponding to the largest fluctuations in the cosmic density field(1-3). Observing these structures during their period of active growth and assembly-the first few hundred million years of the Universe-is challenging because it requires surveys that are sensitive enough to detect the distant galaxies that act as signposts for these structures and wide enough to capture the rarest objects. As a result, very few such objects have been detected so far(4,5). Here we report observations of a far-infrared-luminous object at redshift 6.900 (less than 800 million years after the Big Bang) that was discovered in a wide-field survey(6). High-resolution imaging shows it to be a pair of extremely massive star-forming galaxies. The larger is forming stars at a rate of 2,900 solar masses per year, contains 270 billion solar masses of gas and 2.5 billion solar masses of dust, and is more massive than any other known object at a redshift of more than 6. Its rapid star formation is probably triggered by its companion galaxy at a projected separation of 8 kiloparsecs. This merging companion hosts 35 billion solar masses of stars and has a star-formation rate of 540 solar masses per year, but has an order of magnitude less gas and dust than its neighbour and physical conditions akin to those observed in lower-metallicity galaxies in the nearby Universe(7). These objects suggest the presence of a dark-matter halo with a mass of more than 100 billion solar masses, making it among the rarest dark-matter haloes that should exist in the Universe at this epoch.
Note6 month embargo; published online: 06 December 2017
VersionFinal accepted manuscript
SponsorsNASA; NSF [PLR-1248097, PHY-1125897]; Kavli Foundation; Gordon and Betty Moore Foundation [GBMF 947]; US NSF [AST-1312950]; NASA from the Space Telescope Science Institute [HST-GO-14740]; National Radio Astronomy Observatory [SOSPA4-007]; Simons Foundation; A.P. Sloan Foundation Fellowship
- The rapid assembly of an elliptical galaxy of 400 billion solar masses at a redshift of 2.3.
- Authors: Fu H, Cooray A, Feruglio C, Ivison RJ, Riechers DA, Gurwell M, Bussmann RS, Harris AI, Altieri B, Aussel H, Baker AJ, Bock J, Boylan-Kolchin M, Bridge C, Calanog JA, Casey CM, Cava A, Chapman SC, Clements DL, Conley A, Cox P, Farrah D, Frayer D, Hopwood R, Jia J, Magdis G, Marsden G, Martínez-Navajas P, Negrello M, Neri R, Oliver SJ, Omont A, Page MJ, Pérez-Fournon I, Schulz B, Scott D, Smith A, Vaccari M, Valtchanov I, Vieira JD, Viero M, Wang L, Wardlow JL, Zemcov M
- Issue date: 2013 Jun 20
- A massive galaxy in its core formation phase three billion years after the Big Bang.
- Authors: Nelson E, van Dokkum P, Franx M, Brammer G, Momcheva I, Schreiber NF, da Cunha E, Tacconi L, Bezanson R, Kirkpatrick A, Leja J, Rix HW, Skelton R, van der Wel A, Whitaker K, Wuyts S
- Issue date: 2014 Sep 18
- A massive, quiescent galaxy at a redshift of 3.717.
- Authors: Glazebrook K, Schreiber C, Labbé I, Nanayakkara T, Kacprzak GG, Oesch PA, Papovich C, Spitler LR, Straatman CM, Tran KH, Yuan T
- Issue date: 2017 Apr 5
- Early assembly of the most massive galaxies.
- Authors: Collins CA, Stott JP, Hilton M, Kay ST, Stanford SA, Davidson M, Hosmer M, Hoyle B, Liddle A, Lloyd-Davies E, Mann RG, Mehrtens N, Miller CJ, Nichol RC, Romer AK, Sahlén M, Viana PT, West MJ
- Issue date: 2009 Apr 2
- A dominant population of optically invisible massive galaxies in the early Universe.
- Authors: Wang T, Schreiber C, Elbaz D, Yoshimura Y, Kohno K, Shu X, Yamaguchi Y, Pannella M, Franco M, Huang J, Lim CF, Wang WH
- Issue date: 2019 Aug