Improvements in photometry. V - High-order moments in transformation theory

Details Improvements in photometry. V - High-order moments in transformation theory Improvements in photometry. V - High-order moments in transformation theory

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...257..366y&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 257, no. 1, p. 366-388.

Astronomy and Astrophysics

Astrophysics

17

Astronomical Photometry, Astronomical Spectroscopy, Irradiance, Mathematical Models, Taylor Series

Scientific paper

A re-examination of photometric transformation theory was performed in order to determine the importance of higher-order terms which depend on high-order central moments of the passband response profiles. High-order terms in extinction corrections decrease with decreasing passband width. However, in general transformations between systems high-order terms are independent of the bandwidth and transformation errors due to neglected high-order terms may be as large for narrowband photometry and spectrophotometry as for wideband systems. The need for quartic transformations is independent of spectral resolution.

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