TwinSpecNet: Extending APOGEE’s chemical reach to low-signal-to-noise spectra via empirical paired learning

Context. Large spectroscopic surveys rely on automated pipelines to deliver homogeneous stellar labels; however, a substantial fraction of observations are carried out at a low signal-to-noise ratio (S/N) where label estimates become imprecise or are omitted. In APOGEE, these low-S/N spectra visits...

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Hlavní autoři:	Sun Weijia, Chiappini Cristina, Nepal Samir
Médium:	Artigo
Jazyk:	Inglês
Vydáno:	EDP Sciences 2026-06-01
Edice:	Astronomy & Astrophysics
Témata:	techniques: spectroscopic stars: abundances galaxy: bulge
On-line přístup:	https://www.aanda.org/articles/aa/full_html/2026/06/aa59661-26/aa59661-26.html
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