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- W3215212869 abstract "The absorption of light by molecules in the atmosphere of Earth is a complication for ground-based observations of astrophysical objects. Comprehensive information on various molecular species is required to correct for this so called telluric absorption. We present a neural network autoencoder approach for extracting a telluric transmission spectrum from a large set of high-precision observed solar spectra from the HARPS-N radial velocity spectrograph. We accomplish this by reducing the data into a compressed representation, which allows us to unveil the underlying solar spectrum and simultaneously uncover the different modes of variation in the observed spectra relating to the absorption of $mathrm{H_2O}$ and $mathrm{O_2}$ in the atmosphere of Earth. We demonstrate how the extracted components can be used to remove $mathrm{H_2O}$ and $mathrm{O_2}$ tellurics in a validation observation with similar accuracy and at less computational expense than a synthetic approach with molecfit." @default.
- W3215212869 created "2021-12-06" @default.
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- W3215212869 date "2021-01-01" @default.
- W3215212869 modified "2023-09-27" @default.
- W3215212869 title "Unsupervised Spectral Unmixing For Telluric Correction Using A Neural Network Autoencoder" @default.
- W3215212869 hasPublicationYear "2021" @default.
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