Over the last two weeks, I built a new robust dimensionality-reduction method called Robust-HMF. This method is a hammer, looking for a nail. This week, Hans-Walter Rix (MPIA) suggested that I use the method on young stellar objects observed in SDSS-V BOSS spectra. I did that, and I found hundreds of young stars with narrow H-alpha emission lines. It turns out that the Robust-HMF method does really well on these data; it can fit all the absorption lines in the stars, plus all the wacky continuum shapes generated by a combination of instrumental effects and dust attenuation. That is, I can run the method on more-or-less raw data, provided that it has been shifted to rest frame (and the raw SDSS-V pipelines do that pretty well on stars like these).
Anyway, I don't know what to say about my results quantitatively yet, but I find hundreds of emission-line stars, and my equivalent-width sensitivity is excellent. Who wants this sample?
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