Metallicity of the high-redshift Universe traced by radio galaxies
2009 ◽
Vol 5
(S265)
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pp. 179-180
Keyword(s):
AbstractWe investigate the metallicity of the narrow line regions (NLRs) of high-z radio galaxies (HzRGs), using new deep optical spectra of 9 HzRGs obtained with FORS2 on VLT and data from the literature. To estimate the metallicity of NLRs we focus on the Civ/Heii and Ciii]/Civ flux ratios. Based on comparison between the observed emission-line flux ratios and the prediction of our photoionization model calculations, we find no significant metallicity evolution in NLRs of HzRGs, up to z ~ 4. We discuss the possibility that massive galaxies had almost completed the major epoch of the star formation in the very high-z universe (z > 5).
1999 ◽
Vol 186
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pp. 471-474
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Keyword(s):
2007 ◽
Vol 375
(4)
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pp. 1299-1310
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Keyword(s):
2017 ◽
Vol 599
◽
pp. A123
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Keyword(s):
2020 ◽
Vol 58
(1)
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pp. 617-659
Keyword(s):
2019 ◽
Vol 15
(S352)
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pp. 194-198
2012 ◽
Vol 10
(H16)
◽
pp. 128-128
Keyword(s):
2012 ◽
Vol 8
(S295)
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pp. 177-177