Biographical Encyclopedia of Astronomers

2014 Edition
| Editors: Thomas Hockey, Virginia Trimble, Thomas R. Williams, Katherine Bracher, Richard A. Jarrell, Jordan D. MarchéII, JoAnn Palmeri, Daniel W. E. Green

Chalonge, Daniel

Reference work entry
DOI: https://doi.org/10.1007/978-1-4419-9917-7_260

BornGrenoble, Isère, France, 31 January 1895

DiedParis, France, 28 November 1977

French observational astronomer Daniel Chalonge is remembered primarily for his work on determining the properties of stars from relatively broadband spectral information. His thesis work in Paris was directed by French physicists Aimé Cotton and  Charles Fabry. Chalonge had several dozen students, some of whom (especially Lucienne Divan) have also contributed to the study of stellar classification.

In 1941, Chalonge and  Daniel Barbierannounced a way of measuring the temperature, surface gravity (related to luminosity and mass), and abundance of heavy elements in stars from information on color, rather than detailed, high-resolution spectra. They defined three parameters describing the behavior of spectra near a wavelength where hydrogen gas is a strong absorber. Their parameters were eventually shown to be well correlated with stellar temperatures, surface gravities, and compositions by derived from...

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Selected References

  1. Barbier, Daniel and Daniel Chalonge (1941). “Étude du rayonnement continue de quelques étoiles entre 3 100 et 4 600 Å.” Annales d’astrophysique 4: 30–96.ADSGoogle Scholar
  2. Chalonge, Daniel and Vladimir Kourganoff (1946). “Recherches sur le spectre continu du soleil.” Annales d’astrophysique 9: 69–96.ADSGoogle Scholar
  3. Chandrasekhar, S. (1992). Current Topics in Astrofundamental Physics: First Course, edited by N. Sanchez and A. Zichichi. International School of Astrophysics “D. Chalonge.” Singapore: World Scientific, p. 3.Google Scholar
  4. Fehrenbach, Ch. (1992). Current Topics in Astrofundamental Physics: First Course, edited by N. Sanchez and A. Zichichi. International School of Astrophysics “D. Chalonge.” Singapore: World Scientific, p. 701.Google Scholar
  5. Olsen, E. H. (1983). “Four-colour uvby and Hβ Photometry of A5 to G0 Stars Brighter than 8.3 M.” Astronomy and Astrophysics Supplement Series 54: 55–134.ADSGoogle Scholar
  6. Rufener, F. (1988). Catalogue of Stars Measured in the Geneva Observatory Photometric System. Sauverny: Observatoire de Genève.Google Scholar

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Observatoire de ParisParisFrance