A note on bolometric corrections for late-type stars and long-period variables

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Abstract
The results of broad-band BVRcIcJHKL' photometry of late-type stars are used to define a bolometric correction BCIc as a function of (V-I)c or (R-I)c, where mbol = Ic + BCIc. The bolometric corrections BCH and BCK are also derived, and simple analytic expressions are given for BCIc, BCH, and BCK as functions of color index.