Data associated with 'Closing the stellar labels gap: Stellar label independent evidence for [α/M] information in Gaia BP/RP spectra'

We present a stellar label independent model for Gaia BP/RP (XP) spectra, which does not rely on stellar labels to simulate XP spectra. Here, we provide all of the data required to reproduce our results. All of the data files should be placed in the data folder. Below we brieflty summarize the contents of each:

APOGEE/GAIA XP DATA:

• xp_apogee_cat.h5: Contains all Gaia XP data and APOGEE stellar labels used in this work.
• xp_corrs.npz: Contains Gaia XP covariance matrices for a subset of the test data to compute reconstruction errors.

INTERMEDIATE DATA PRODUCTS:

(All files below can be reproduced with our codebase. We simply include them to speed up runtime for reproducing our results.)

• lb23_xp_est_labels.npy: Leung & Bovy (2023) XP coeffficient spectra reconstructions (stellar label dependent implementaton)
• lb23_xp_est_no_labels.npy: Leung & Bovy (2023) XP coeffficient spectra reconstructions (stellar label independent implementaton)
• xp_wavelength_space.npy: Observed Gaia XP spectra in wavelength space
• err_wavelength_space.npy: Observed Gaia XP uncertainties in wavelength space
• apogee_norm.npz: Means and standard deviations which are used to pre-process Gaia XP data before inputting into our model
• zhang_stellar_params_xmatch.npz: Zhang, Green, Rix (2023) stellar parameter estimates for subset of XP spectra (to compute reconstructions)
• vae_wavelength_space.npy: Our model XP coefficient reconstructions in wavelength space

If you have any questions please reach out via email: alex.laroche@mail.utoronto.ca