Peculiar Stars

Spectroscopic binaries, chromospheric emission, etc.

Classification and diagnostics of the GALAH dataset with t-SNE reduction of spectral information

Peculiar spectra and objects to which they belong are relatively abundant among targets of general all-sky surveys such as GALAH. Detection of such objects is important because the automatic evaluation of their stellar and chemical properties might turn out to be very challenging and therefore introduces a complication in achieving scientific goals such as galactic archaeology.

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