Our second paper on carbon stars as standard candles has just been accepted. Check it out.
arXiv:2011.11681 [pdf, other]:
Carbon stars as standard candles: II. The median J magnitude as a distance indicator
Authors: Javiera Parada, Jeremy Heyl, Harvey Richer, Paul Ripoche, Laurie Rousseau-Nepton
Here is the first paper too:
arXiv:2005.05539 [pdf, other], doi 10.1093/mnras/staa1346:
Carbon stars as standard candles: I. The luminosity function of carbon stars in the Magellanic Clouds
Authors: Paul Ripoche, Jeremy Heyl, Javiera Parada, Harvey Richer