Cited by 81Galaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studiesAstrophysics and Star Formation Studies

First measurement of Mg isotope abundances at high redshifts and accurate estimate of Δ α/α

Open access
Agafonova, I. I., Molaro, P., Levshakov, S. A., Hou, J. L.·2011·Astronomy & Astrophysics

Abstract

Aims. Abundances of the Mg isotopes 24Mg, 25Mg, and 26Mg can be used to test models of chemical enrichment of interstellar/intergalactic gas clouds. Additionally, because the position of the Mg ii λλ2796,2803 Å lines is often taken as a reference in computations of possible changes of the fine-structure constant α, it should be clarified to which extent these lines are affected by isotopic shifts.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1051/0004-6361/201016194

Cites

55 of 55 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • In systems at z = 1.58 and 1.65, Agafonova et al. concluded that r_Mg ≲ 0.7 (respectively 2.6).

    “In systems at z ¼ 1:58 and 1.65 they conclude that r Mg .0:7(resp.2.6).”
  • Agafonova et al. (2011) measured the isotopic ratio 24Mg:25Mg:26Mg = (19 ± 11):(22 ± 13):(59 ± 6), leading to r_Mg = 4 at z = 0.45, showing over-abundance of heavy Mg isotopes compared to the Solar system value r_Mg = 0.3.

    “From the absorption spectrum of the quasar HE0001-2340 observed with VLT/UVES, Agafonova et al. (2011) measured the isotopic ratio 24 Mg: 25 Mg: 26 Mg ¼ ð19 Æ 11Þ : ð22 Æ 13Þ : ð59 Æ 6Þ leading to r Mg ¼ 4 at z ¼ 0:45, hence showing over-abundance of heavy Mg isotopes compared to the Solar system value of r Mg ¼ 0:3.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 3

  1. Berengut, J. C., Dzuba, V. A., Flambaum, V. V., et al. 2010 [arXiv:1011.4136] · arXiv
  2. Uzan, J.-P. 2010, [arXiv:1009.5514] · arXiv
  3. Yong, D., Aoki, W., & Lambert, D. L. 2006, 638, 1018

Cited by

Sorted by citations

Authors
Agafonova, I. I., Molaro, P., Levshakov, S. A., & Hou, J. L.
Affiliations
  • Trieste Astronomical Observatory (IT)
  • Shanghai Astronomical Observatory (CN)
Venue
Astronomy & Astrophysics
Publisher
EDP Sciences
Published
2011-03-25
Volume
529
Pages
A28
ISSN
  • 0004-6361 (ISSN-L)
  • 1432-0746
OpenAlex
W1738986881
Cited by
81
References
55
Citations by year
2025: 1 · 2023: 1 · 2022: 6 · 2021: 3 · 2020: 4 · 2019: 3 · 2018: 2 · 2017: 13 · 2016: 13 · 2015: 7 · 2014: 5 · 2013: 13 · 2012: 5
FWCI
4.76
Type
journal article
Language
en
Open access
Locations
  • Astronomy and Astrophysics (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
Funders
  • National Natural Science Foundation of China
  • Russian Foundation for Basic Research
  • Chinese Academy of Sciences
  • National Key Research and Development Program of China
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysics and Star Formation Studies
Keywords
magnesium isotopes, chemical enrichment, intergalactic medium, interstellar medium, fine-structure constant variation, alpha variation, isotope shift, 24Mg, 25Mg, 26Mg

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review