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The Valparaíso ALMA Line Emission Survey
During my time in Chile, I’ve been working on a new survey. The Valparaíso ALMA Line Emission Survey (VALES) is a sample of main-sequence and starburst galaxies selected from the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS). The idea is … Read more
Posted in Astronomy, Research
Tagged ALMA, Herschel, observations, spectroscopy, VALES
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Stacking optical spectra of galaxies
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
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Gas properties from Herschel FIR spectroscopy
I’ve had a great time studying how far-infrared (FIR) lines probe interstellar gas properties. This week, I attended the 69th Dutch Astronomy Conference, held in Noordwijkerhout, The Netherlands. I presented a poster based on the latest work from my next … Read more