Intermediate-band photometry of faint standard stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Bandpass Filters, Infrared Radiation, Photometry, Variable Stars, Astronomical Observatories, Calibrating, Infrared Spectra, Spectrum Analysis, Standards

Scientific paper

The David Dunlap Observatory system uses six intermediate-band filters whose central wavelengths were chosen to cover important features in the spectrum of a late-type star. Calibrations of the color indices with physical parameters, allow one to estimate Teff, log g, Fe/H, Mv and reddening directly from the photometry. Although a number of standards lists exist, only a small fraction of the stars is fainter than V=6. It is desirable to add to the numbers of faint standards. Results are presented of photometry of sixteen stars obtained during a program of variable-star photometry at Blue Mesa Observatory.

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