Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...63..333w&link_type=abstract
Icarus (ISSN 0019-1035), vol. 63, Sept. 1985, p. 333-338.
Astronomy and Astrophysics
Astronomy
3
Astronomical Photometry, Comets, Reference Stars, Spectroscopic Analysis, Astronomical Catalogs, Cn Emission, Filters, Ultraviolet Astronomy, Comets, Photometry, Astronomy, Wavelengths, Equipment, Procedure, Ultraviolet, Emissions, Spectra, Magnitude, Color, Comparisons, Observations, Data
Scientific paper
Five narrowband interference filters centered at wavelengths 0.365, 0.387, 0.406, 0.484, and 0.514 μm have been selected by the International Astronomical Union to represent ultraviolet continuum, CN emission, C3 emission, blue continuum, and C2 emission in the spectra of comets, respectively. The authors present adopted magnitudes and colors in this filter system for 50 standard stars ranging in blue magnitude 4 to 12, in spectral type from O to K, and mostly distributed around equatorial regions of the sky. Tabulated uncertainties are generally on the order of 0.02 mag or smaller. The zero points of the photometric system are chosen such that blue-continuum magnitudes are approximately equivalent to Johnson B, and such that color indices average zero for solar analog stars.
Wisniewski W.
Zellner Ben
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