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Galaxies SIG Seminar

Galaxies Science Interest Group

Galaxies SIG about Galaxies SIG Seminar

Location

Virtual

dates

8 September 2026
1:00pm ET

Community

Galaxies SIG

Type

Seminar

Learning to See Sharper: Deep Learning for Astronomical Data Enhancement

Speaker

Shoubaneh Hemmati (Caltech/IPAC)

Abstract

Astronomical surveys inherently trade off coverage, depth, and resolution, presenting an ill-posed inverse problem where classical deconvolution methods plateau. By leveraging survey overlaps as empirical priors, deep learning models learn direct low- to high-resolution mappings to enhance wide-area archives. I will present specialized neural architectures tailored to distinct imaging and spectroscopic challenges, from generative models that deblend crowded fields and super-resolve infrared observations, to shape-preserving residual networks for weak lensing, diffusion models for realistic survey simulations, and physics-informed models that resolve blended spectral emission lines. Matching right-sized architectures to specific scientific measurements shows how learned priors can scale data enhancement across next-generation surveys.

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Angled from the upper left corner to the lower right corner is a cone-shaped orange-red cloud known as Herbig-Haro 49/50. This feature takes up about three-fourths of the length of this angle. The upper left end of this feature has a translucent, rounded end. The conical feature widens slightly from the rounded end at the upper right down to the lower right. Along the cone there are additional rounded edges, like edges of a wave, and intricate foamy-like details, as well as a clearer view of the black background of space. In the upper left, overlapping with the rounded end of Herbig-Haro 49/50, is a background spiral galaxy with a concentrated blue center that fades outward to blend with red spiral arms. The background of space is speckled with some white stars and smaller, more numerous, fainter white galaxies throughout.