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Pradosh Barun

As seen in: arXiv, Oxford Academic
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Articles

Astrophysics > Astrophysics of Galaxies

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By Pradosh Barun, De Almeida E Silva
| arXiv
[Submitted on 5 Oct 2026] Title:Barium and europium abundances from the Gaia-ESO Survey using The Cannon View a PDF of the paper titled Barium and europium abundances from the Gaia-ESO Survey using The Cannon, by Pradosh Barun Das and 5 other authors View PDF Abstract:Neutron-capture element abundances encode the time-dependent interplay between slow (s-) and rapid (r-) nucleosynthetic processes and provide critical constraints on Galactic chemical evolution.
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The GALAH Survey: Stellar parameters and abundances for 800,000 Gaia RVS spectra using GALAH DR4 and The Cannon

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By De Vasconcelos Silva, Lund Observatory, Pupin Physics Laboratories, Pradosh Barun
| Oxford Academic Verified
Analysing stellar parameters and abundances from nearly one million Gaia DR3 Radial Velocity Spectrometer (RVS) spectra poses challenges due to the limited spectral coverage (restricted to the infrared Ca ii triplet) and variable signal-to-noise ratios of the data. To address this, we use The Cannon, a data-driven method, to transfer stellar parameters and abundances from the GALAH Data Release 4 (DR4; R ∼ 28 000) catalogue to the lower resolution Gaia DR3 RVS spectra (R ∼ 11,500).
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