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astro-ph.SR2023
Stellar Spectra Fitting with Amortized Neural Posterior Estimation and nbi
Keming Zhang, Tharindu Jayasinghe, Joshua S. Bloom
Modern surveys often deliver hundreds of thousands of stellar spectra at once, which are fit to spectral models to derive stellar parameters/labels. Therefore, the technique of Amo…
astro-ph.SR2023★ 4 cited
The Progenitor Star of SN 2023ixf: A Massive Red Supergiant with Enhanced, Episodic Pre-Supernova Mass Loss
Yu-Jing Qin, Keming Zhang, Joshua Bloom +10
We identify the progenitor star of SN 2023ixf in the nearby galaxy Messier 101 using Keck/NIRC2 adaptive optics imaging and pre-explosion HST/ACS images. The supernova position, lo…