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andycasey / smhr

Spectroscopy Made Hard(er)
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Isochrones for stellar parameters #1

Closed alexji closed 5 years ago

alexji commented 8 years ago

If no Fe II lines (or if Teff from H-line?): Determine logg from an isochrone given the temperature, propagating temperature uncertainties.

User should input the isochrone (age, metallicity) and ADS reference; we can use Y2 or Dartmouth isochrones as default.

andycasey commented 7 years ago

This could be nearly trivially included by making use of the isochrones package.

Having that package would also be convenient for displaying a H-R diagram on the summary tab, but I don't want to require the isochrones package because the associated isochrone grids that are needed can be hundreds of MB or >1GB.

alexji commented 7 years ago

The H-R diagram is for logg vs Teff, right? It's probably easiest to store a few Y2 isochrones locally for that.

I've used isochrones for another project and it's easy to use, but it takes a lot of disk space and is still a bit under development. It may be best to not lump the isochrone functionality into SMH, but rather make a separate (small) package that builds on isochrones and prints the results and/or creates a file that can be imported into SMH.

alexji commented 5 years ago

I'm closing this, we are not going to do it in SMHR.