Narrow-band photometry in the 1-4 micron region - Calibration and applications

Details Narrow-band photometry in the 1-4 micron region - Calibration and applications Narrow-band photometry in the 1-4 micron region - Calibration and applications

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981rmxaa...6..145w&link_type=abstract

(International Astronomical Union, Reunion Regional Latinoamericana de Astronomia, 2nd, Merida, Venezuela, Jan. 19-23, 1981) Rev

Astronomy and Astrophysics

Astronomy

5

Abundance, Calibrating, Infrared Stars, Late Stars, Red Giant Stars, Stellar Spectrophotometry, Astronomical Photometry, Bandwidth, Carbon Monoxide, Cool Stars, Cyanogen, Silicon Oxides, Spectral Energy Distribution, Spectrum Analysis, Stellar Color, Stellar Temperature, Technology Utilization, Water

Scientific paper

It is noted that longward of 1 micron, the absolute calibration of the photometry needed for determining the energy distributions and color temperatures of cool stars has generally been based on theoretical energy distributions. A program now under way at Kitt Peak National Observatory, however, is providing direct measurements of absolute monochromatic fluxes in a set of standard stars at 13 wavelengths. Color temperatures from narrow-band measurements at 1.04 and 4.00 microns are especially well suited for very cool stars and are found to be in good agreement with the new effective temperature scale established from lunar occultation observations. Spectral features that can be measured by narrow-band photometry in the 1-4 micron region include bands of CO, CN, C2, OH, H2O, and SiO, and they offer the prospect of determining two-dimensional spectral classifications for late-type stars from infrared data alone.

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