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Abundances of Elements

  • Reference work entry
Encyclopedia of Astrobiology

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Keywords

Chemical composition, nucleosynthesis, nuclides

Definition

The relative amount (or fraction) of a given nuclide in a sample of matter is called the abundance of that nuclide. It can be expressed either in absolute terms (i.e., with respect to the total amount of matter in the sample) or in relative terms (with respect to the amount of some key element, e.g., the most abundant one, in the sample). Similarities and differences in the elemental and isotopic composition of stars and galaxies are key ingredients for understanding their origin and evolution.

Overview

The composition of remote objects (the Sun, stars, interstellar gas, and galaxies) is determined through spectroscopy, which usually allows determination of elemental abundances; in rare cases, particularly for interstellar clouds, some isotopic abundances may be determined in those objects. For Earth, lunar, and meteoritic samples, nuclear mass spectroscopy allows precise determination of most isotopic abundances;...

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References and Further Reading

  • Asplund M, Grevesse N, Sauval AJ, Scott P (2009) The chemical composition of the sun. Ann Rev Astron Astrophys 47:481–522

    Article  ADS  Google Scholar 

  • Lodders K (2003) Solar system abundances and condensation temperatures of the elements. Astrophys J 591:1220–1247

    Article  ADS  Google Scholar 

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Author information

Authors and Affiliations

  1. Institut d’Astrophysique de Paris, 98bis Bd Arago, 75014, Paris, France

    Dr. Nikos Prantzos

Authors
  1. Dr. Nikos Prantzos
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Corresponding author

Correspondence to Nikos Prantzos .

Editor information

Editors and Affiliations

  1. Astrophysicist, Laboratoire d’Astrophysique de Bordeaux, BP 89, 33270, Floirac, France

    Muriel Gargaud

  2. Departamento de Planetología y Habitabilidad Centro de Astrobiología (CSIC-INTA), Universidad Autónoma de Madrid Campus Cantoblanco, Torrejón de Ardoz, 28049, Madrid, Spain

    Ricardo Amils

  3. Department of Astrophysics, Centro de Astrobiología (INTA-CSIC) Ctra de Ajalvir km 4, 28850 Torrejón de Ardoz, Madrid, Spain

    José Cernicharo Quintanilla

  4. Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd. NW, Washington, DC, 20015, USA

    Henderson James (Jim) Cleaves II

  5. Department of Astronomy, University of Massachusetts Lederle Graduate Research, 710 North Pleasant Street, Amherst, MA, 01003-9305, USA

    William M. Irvine

  6. GEOTOP & Départment des Sciences de la Terre et de l’Atmosphère, Université du Québec à Montréal, CP 8888, succ. Centre-Ville, Montréal, QC, H3C 3P8, Canada

    Daniele L. Pinti

  7. Astrobiology, CNES/DSP/EU, 2 place Maurice-Quentin, 75039, Paris, France

    Michel Viso

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© 2011 Springer-Verlag Berlin Heidelberg

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Prantzos, N. (2011). Abundances of Elements. In: Gargaud, M., et al. Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11274-4_10

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