The near-infrared Cepheid distance scale. I - Preliminary galactic calibration

Astronomy and Astrophysics – Astronomy

Scientific paper

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Cepheid Variables, Infrared Astronomy, Stellar Luminosity, Stellar Oscillations, Calibrating, Milky Way Galaxy, Near Infrared Radiation, Regression Analysis, Stellar Magnitude

Scientific paper

Broad-band photometry at J, H, and K has been obtained for a sample of galactic Cepheids in clusters and associations. These data have been used to calibrate the J, H, and K period-luminosity (P-L) relations. These near-infrared P-L relations are markedly less affected by extinction, temperature, metallicity, and duplicity than their counterparts in the optical.

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