An Unsupervised Method for Identifying X-enriched Stars Directly from Spectra: Li in LAMOST
An Unsupervised Method for Identifying X-enriched Stars Directly from Spectra: Li in LAMOST
Abstract Stars with peculiar element abundances are important markers of chemical enrichment mechanisms. We present a simple method, tangent space projection (TSP), for the detection of X -enriched stars, for arbitrary elements X , even from blended lines. Our method does not require stellar labels, but instead directly estimates the …