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Galaxies SIG Seminar November 6, 2024

6 November 2024

November 6th 2024, 11:00 am – 12:00 noon ET

Star Formation in the Diffuse Universe

Speaker

Jason Young (Williams College)

Abstract

The modern view of galaxy evolution links gas availability to star formation, with the depletion / removal of gas seen as the end of a galaxy's active life. However, about 10% of local spirals are gas rich, yet host little star formation. The paradox presented by these "classical low surface brightness (LSB) spirals" tests the limits of our knowledge of star formation. I will highlight results from a deep multi-instrument campaign aimed at characterizing star formation in nearby LSB spirals, with an eye toward the anticipated results from observatories like HWO and Roman.

Zoom connection information can be found on the Galaxies SIG seminar page.

Galaxies SIG Website

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Galaxies SIG Announcements: 2024-2025 Seminars are happening on the first Wednesdays of every month at 11am – 12pm

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An illustration of Sun-like star HD 181327 and its surrounding debris disk. The star is at top right. It is surrounded by a far larger debris disk that forms an incomplete ellpitical path and is cut off at right. There’s a huge cavity between the star and the disk. The debris disk is shown in shades of light gray. Toward the top and left, there are finer, more discrete points in a range of sizes. The disk appears hazier and smokier at the bottom. The star is bright white at center, with a hazy blue region around it. The background of space is black. The label Artist's Concept appears at lower left.