Calibration of the Tip of the Red Giant Branch (TRGB)

Understand

The Tip of the Red Giant (TRGB) method provides one of the most accurate and precise means of measuring the distances to nearby galaxies.

• Here we present a VIJHK absolute calibration of the TRGB based on observations of TRGB stars in the Large Magellanic Cloud (LMC),grounded on detached eclipsing binaries (DEBs).
• This paper presents a more detailed description of the method first presented in Freedman et al.
• (2019) for measuring corrections for the total line-of-sight extinction and reddening to the LMC.