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Sökning: onr:"swepub:oai:research.chalmers.se:d143ee52-835d-460e-89b9-092f53d00fd5" > The ramp-up of inte...

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FältnamnIndikatorerMetadata
00003812naa a2200445 4500
001oai:research.chalmers.se:d143ee52-835d-460e-89b9-092f53d00fd5
003SwePub
008211105s2021 | |||||||||||000 ||eng|
0247 a https://research.chalmers.se/publication/5269402 URI
0247 a https://doi.org/10.1038/s41550-021-01515-92 DOI
040 a (SwePub)cth
041 a engb eng
042 9 SwePub
072 7a art2 swepub-publicationtype
072 7a ref2 swepub-contenttype
1001 a Franco, Maximilianu University of Hertfordshire4 aut
2451 0a The ramp-up of interstellar medium enrichment at z > 4
264 c 2021-11-04
264 1b Springer Science and Business Media LLC,c 2021
520 a Fluorine is one of the most interesting elements for nuclear and stellar astrophysics1,2. Fluorine abundance was first measured for stars other than the Sun in 19921, then for a handful of metal-poor stars3, which are likely to have formed in the early Universe. The main production sites of fluorine are under debate and include asymptotic giant branch stars, the ν-process in core-collapse supernovae, and Wolf–Rayet stars4,5,6,7,8,9,10. Due to the difference in the mass and lifetime of progenitor stars, high-redshift observations of fluorine can help constrain the mechanism of fluorine production in massive galaxies. Here, we report the detection of HF (signal-to-noise ratio of 8) in absorption in a gravitationally lensed dusty star-forming galaxy at redshift z = 4.4 with NHF/NH2NH2 as high as ~2 × 10−9, indicating a very quick ramp-up of the chemical enrichment in this high-z galaxy. At z = 4.4, asymptotic giant branch stars of a few solar masses are very unlikely to dominate the enrichment. Instead, we show that Wolf–Rayet stars are required to produce the observed fluorine abundance at this time, with other production mechanisms becoming important at later times. These observations therefore provide an insight into the underlying processes driving the ramp-up phase of chemical enrichment alongside rapid stellar mass assembly in a young massive galaxy.
650 7a NATURVETENSKAPx Kemix Analytisk kemi0 (SwePub)104012 hsv//swe
650 7a NATURAL SCIENCESx Chemical Sciencesx Analytical Chemistry0 (SwePub)104012 hsv//eng
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geokemi0 (SwePub)105062 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geochemistry0 (SwePub)105062 hsv//eng
7001 a Coppin, K. E. K.u University of Hertfordshire4 aut
7001 a Geach, J. E.u University of Hertfordshire4 aut
7001 a Kobayashi, C.u University of Hertfordshire4 aut
7001 a Chapman, S. C.u Dalhousie University4 aut
7001 a Yang, Chentao,d 1988u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)chentao
7001 a Gonzalez-Alfonso, E.u Universidad de Alcala,University of Alcalá4 aut
7001 a Spilker, Justinu The University of Texas at Austin, USA4 aut
7001 a Cooray, A.u University of California4 aut
7001 a Michalowski, M. J.u Uniwersytet im. Adama Mickiewicza w Poznaniu,Adam Mickiewicz University in Poznań4 aut
7102 a University of Hertfordshireb Dalhousie University4 org
7730 t Nature Astronomyd : Springer Science and Business Media LLCg 5, s. 1240-1246q 5<1240-1246x 2397-3366
8564 u https://arxiv.org/pdf/2111.03074.pdf
8564 8u https://research.chalmers.se/publication/526940
8564 8u https://doi.org/10.1038/s41550-021-01515-9

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