Type I supernovae as standard candles

  • R. Cadonau
  • A. Sandage
  • G. A. Tammann
4. Optical Supernovae and Inference of Extragalactic Distances
Part of the Lecture Notes in Physics book series (LNP, volume 224)


Observations are compiled to construct a mean light curve of SNe I in different colors. Individual SNeI show generally no systematic deviations from these templet light curves, and occasional deviations are explained as photometric errors, which can be quite severe in the case of SNe. The peak luminosity of absorption-free SNe I is also uniform with an intrinsic rms scatter of <0. 3 mag. The calibration of the peak luminosity yields MB(max) = -20. 0 ± 0. 4, which requires Ho = 43 t 10 km s−1 Mpc−1. SNeI are probably among the best standard candles known and hence have in view of their high luminosity important applications for distance determinations and for cosmological tests to be performed with Space Telescope.


Light Curve Light Curf Observational Error Decline Rate Virgo Cluster 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • R. Cadonau
    • 1
  • A. Sandage
    • 2
  • G. A. Tammann
    • 3
  1. 1.Astronomisches Institut der Universität BaselBasel
  2. 2.Mount Wilson and Las Campanas ObservatoriesBasel
  3. 3.Visiting Associate Mount Wilson and Las Campanas ObservatoriesAssociate European Southern ObservatoryBasel

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