[Astronomy seminar] Astro Department Seminar - Friday, Sept 23rd 10:30 - Mike Walmsley

[Astronomy seminar announcements]

The next SU astronomy departmental seminar will take place on Friday September 23rd at 10:30 in room FC 61 (AlbaNova building, 6th floor) and on zoom.

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Speaker: Mike Walmsley - University of Manchester
Title: Galaxy Zoo in the Deep Learning Era

Abstract: 
Deep learning is fundamental to Galaxy Zoo’s latest morphology catalogs. In this talk, I explore how we train accurate and reliable models on our volunteer labels, and consider the consequences and opportunities of such models.
One obvious consequence is scale. We will shortly release detailed morphological classifications for 1.4 million nearby galaxies in the DESI Legacy Surveys - a catalog which would have been impossible with volunteers alone. But the truly new opportunity is using the models to create your own catalogs. Having already learned to answer every GZ question at once, our models are easy to adapt to new surveys and new questions. We recently exploited this to create new (and order-of-magnitude larger) catalogs of mergers in HST and ringed galaxies in DECaLS. You can answer your own morphology questions with our public code and models <https://github.com/mwalmsley/zoobot>.
Finally, we describe our very latest work on simultaneously learning from labelled and unlabelled galaxy images. Such approaches are ideally suited to Euclid and Rubin because they allow us to leverage both the millions of human labels collected over the last decade and the raw scale of unlabelled images these new surveys will produce.

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We look forward to seeing many of you there. Thanks!

Eliot and Kris


Topic: Astronomy Department Seminar Mike Walmsley
Time: Sept 23rd, 2022 10:30 AM Stockholm

Join Zoom Meeting:
https://stockholmuniversity.zoom.us/s/61002076352

Meeting ID: 610 0207 6352
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