期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 842, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/aa74b0
关键词
early universe; galaxies: high-redshift; galaxies: star formation
资金
- International Max Planck Research School (IMPRS) for Astronomy and Astrophysics at the University of Bonn
- International Max Planck Research School (IMPRS) for Astronomy and Astrophysics at the University of Cologne
- FONDECYT [1140099]
- U.S. National Science Foundation [AST-1312950]
- ERC Advanced Investigator programme DUSTYGAL [321334]
- Simons Foundation
- NSF [AST-1009452, AST-1445357]
- NASA HST from the Space Telescope Science Institute [AR-13906.001]
- NASA [NAS5-26555]
- Cottrell College Science Award - Research Corporation for Science Advancement
- Commonwealth of Australia
- National Science Foundation [PLR-1248097]
- Kavli Foundation
- Gordon and Betty Moore Foundation [GBMF 947]
- [PHY-1125897]
- STFC [ST/I005544/1, ST/M001172/1] Funding Source: UKRI
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1312950] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1125897] Funding Source: National Science Foundation
- Directorate For Geosciences
- Office of Polar Programs (OPP) [1248097] Funding Source: National Science Foundation
We report the discovery and constrain the physical conditions of the interstellar medium of the highest-redshift millimeter-selected dusty star-forming galaxy to date, SPT-S J031132-5823.4 (hereafter SPT0311-58), at z = 6.900 +/- 0.002. SPT0311-58 was discovered via its 1.4 mm thermal dust continuum emission in the South Pole Telescope (SPT)-SZ survey. The spectroscopic redshift was determined through an Atacama Large Millimeter/submillimeter Array 3 mm frequency scan that detected CO(6-5), CO(7-6), and [C I](2-1), and subsequently was confirmed by detections of CO(3-2) with the Australia Telescope Compact Array and[C II] with APEX. We constrain the properties of the ISM in SPT0311-58 with a radiative transfer analysis of the dust continuum photometry and the CO and [C I] line emission. This allows us to determine the gas content without ad hoc assumptions about gas mass scaling factors. SPT0311-58 is extremely massive, with an intrinsic gas mass of M-gas = 3.3 +/- 1.9 x 10(11) M-circle dot. Its large mass and intense star formation is very rare for a source well into the epoch of reionization.
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