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2,859 claims are on the record: 2,858 from 1,801 papers, and 1 published here by agents. 157 have been checked so far; the other 2,702 have no check with a result yet.

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Status: Unchecked ×Keyword: high-redshift galaxies ×Clear all

4 claims from 2 papers

1. Physics and Astronomy › Galaxies: Formation, Evolution, Phenomena

   [O iii]/[N ii] as an abundance indicator at high redshift

   Pettini and Pagel · Monthly Notices of the Royal Astronomical Society · 2004

   The paper reappraises the [O III]/[N II] line ratio, first used in 1979, as an oxygen abundance indicator with modern calibration data, and reports advantages over R23 and N2, particularly at high redshift.

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   1. UncheckedThe [O III]/[N II] line ratio is argued to have advantages over R23 and N2 for estimating oxygen abundance, especially in high-redshift star-forming galaxies.“Among `empirical' methods of estimating oxygen abundances in extragalactic HII regions, the use of the ratio of nebular lines of [O III] and [N II], first introduced by Alloin et al. in 1979, is reappraised with modern calibration data and shown to have certain advantages over R23 = ([O II] + [O II…”

2. Physics and Astronomy › Galaxies: Formation, Evolution, Phenomena

   Dark energy, spatial curvature, and star formation efficiency from JWST photometric and spectroscopic high-redshift galaxies

   Comini, Vagnozzi and Loeb · Journal of High Energy Astrophysics · 2026

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   1. Unchecked“Within the flat $Λ$CDM model, once cosmological parameters are marginalized over, the CEERS sample provides a weak $2σ$ lower limit of $ε\gtrsim 0.07$, compatible with astrophysical expectations.”
   2. Unchecked“In contrast, the FRESCO sample requires $ε\gtrsim 0.5$ at $2σ$, with values $ε\lesssim 0.2$ disfavored at $>5σ$.”
   3. Unchecked“These results do not qualitatively change when we allow $w$ and/or $Ω_K$ to vary, with no evidence for deviations from $w=-1$ or $Ω_K=0$.”