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Line Profile

  • Reference work entry
Encyclopedia of Astrobiology

  • 38 Accesses

Synonyms

Line shape

Definition

The line profile for a spectral line is a representation of its spectral intensity as a function of frequency or wavelength. The line may appear in emission or absorption toward an astronomical source. Various physical processes can act to modify the natural line profile, such as Doppler, turbulent, or collisional broadening.

See also

Doppler Shift

Spectral Line

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Author information

Authors and Affiliations

  1. Solar System Exploration Division, Code 691, Astrochemistry Laboratory, NASA Goddard Space Flight Center, Code 699, Greenbelt, Maryland, 20771, USA

    Dr. Steven Charnley

Authors
  1. Dr. Steven Charnley
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Corresponding author

Correspondence to Steven Charnley .

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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Charnley, S. (2011). Line Profile. In: Gargaud, M., et al. Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11274-4_888

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