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4 docs tagged with "gaia"

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Catalogue of 183 Spectral Features

Complete annotated list of the 183 spectroscopic features used in AstroSpectro (PHY-3500 x LAMOST DR5 x Gaia DR3), organised by physical family.

Dataset — LAMOST DR5 × Gaia DR3 (PHY-3500)

Complete description of the dataset used in the PHY-3500 project: N = 43,019 LAMOST DR5 spectra cross-matched with Gaia DR3, p = 183 spectroscopic features after quality filtering.

LAMOST DR5 Data

Complete presentation of LAMOST DR5 data used by AstroSpectro: telescope characteristics, FITS structure, SmartDownloader pipeline, Gaia DR3 cross-match and quality filters.

Physical Interpretation of PCA

Detailed analysis of PCA principal axes applied to the 183 LAMOST DR5 features: explained variance, raw flux eigenspectra, loadings by spectral family, Gaia DR3 correlations and HR diagram.