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Galaxies SIG Seminar

Galaxies Science Interest Group

DATE

Oct 03, 2023

TIME

1:00pm

COMMUNITY

Galaxies SIG

TYPE

Seminar

Emission and Absorption Line Modeling from Hydrodynamical Simulations

Aaron Smith (UT Dallas)

The forthcoming Habitable Worlds Observatory (HWO) and Great Observatories Maturation Program (GOMAP) promise unparalleled opportunities for probing emission and absorption lines from galaxies. This talk will focus on the use of hydrodynamical simulations for generating robust line modeling predictions essential for HWO endeavors. I will discuss the merits and challenges of various approaches, hindering a community consensus on galaxy formation. Given the complexities of comparing simulations with different physical accuracy, numerical resolution, and population statistics, I advocate for advancing the state-of-the-art across multiple methodologies, ranging from generic templates to comprehensive radiative transfer calculations. Finally, I will highlight several scientific questions that stand to gain from GOMAP capabilities, emphasizing the role of simulations in providing insights and interpretations.

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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.