I-band Measurements of Red Giant Variables: Methods and Photometry of 66 Stars

Volume 41 number 2 (2013)

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Terry T. Moon

Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia

Abstract

New measurements of IC and V-IC are presented for 66 bright red giant variables. This is the first stage of a program to measure sufficient numbers of such stars that also have well-determined Hipparcos parallaxes with a view to calibrating the TRGB in the IC band as a tool for accurately measuring distances to nearby galaxies.