Photometric accuracy - The impact of extrapolation in differing color-transformation schemes

Details Photometric accuracy - The impact of extrapolation in differing color-transformation schemes Photometric accuracy - The impact of extrapolation in differing color-transformation schemes

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...264..345m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 264, no. 1, p. 345-349.

Astronomy and Astrophysics

Astrophysics

3

Accuracy, Astronomical Photometry, Error Analysis, Data Processing, Extrapolation, Wolf-Rayet Stars

Scientific paper

We discuss photometric errors that arise from the use of differing color-transformation schemes when extrapolating outside the range of the standard values that define the system. An example based on data from the Long-Term Photometry of Variables project (LTPV) at ESO is analyzed. Practically, the extrapolation errors are most evident as systematic brightness jumps of some program stars, seen when monitored over several observing runs. Conclusions are drawn about the choice of standard stars in the Stromgren system.

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