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DanielAndreasen / FASMA

A python interface around MOOG, the stellar spectra code
https://www.iastro.pt/fasma/
MIT License
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Better estimate on rejt for ARES #43

Closed DanielAndreasen closed 8 years ago

DanielAndreasen commented 8 years ago

We should find a way to estimate the rejt parameter in the ARES configuration file. This affect the derived metallicity if it is misplaced!

MariaTsantaki commented 8 years ago

This is complicated.. I always have doubts about ARES parameters. There is a guide table with rejt parameters in correlation with S/N in Mortier 2013 I think.

DanielAndreasen commented 8 years ago

Then we must just get the S/N from the spectrum. I think ARES can look at some regions to to estimate it.

DanielAndreasen commented 8 years ago

With commit 65ecc2e I think we made an improvement. Basically we use three regions to estimate the S/N and then from there the rejt. This is for sure a better estimate, but is it the best?

DanielAndreasen commented 8 years ago

Add more regions to estimate the SNR for higher wavelength regions.