2021-01-21

the subtleties of telluric, gas-cell, and spectral absorption

Today I spoke with Matt Daunt (NYU) about subtleties in modeling stellar spectra as observed through a gas cell or the atmosphere: The effects of these things are multiplicative on the spectrum, but multiplicative at extremely high resolution; they aren't strictly multiplicative at low resolution (because convolution doesn't commute with multiplication!). He is close to being able to reproduces some of the results from our wobble paper.

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