Tom Hughes (舒大同) | Research Fellow in Extragalactic Astrophysics

Stacking optical spectra of galaxies

Posted on 30/10/2014 by Tom

Here’s a short animation showing the effects of stacking up spectra. Measuring the intensities and equivalent widths of emission lines can be tricky in galaxy spectra where the signal-to-noise (S/N) is low, mostly due to difficulty in determining the baseline … Read more →

Posted in Code, Data Analysis | Tagged python, spectroscopy | Comments Off

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