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Galaxies SIG Seminar

Galaxies Science Interest Group

DATE

Sep 04, 2024

TIME

11:00am

COMMUNITY

Galaxies SIG

TYPE

Seminar

Unveiling the Drivers of Galaxy Growth with the Habitable Worlds Observatory

Swara Ravindranath & Marc Postman, HWO Galaxy Growth Working Group

Habitable Worlds Observatory (HWO) is a large (>6 meter) ultraviolet / optical /near-infrared ultra-stable space telescope recommended by the National Academies Decadal Survey "Pathways to Discovery in Astronomy and Astrophysics for the 2020s." During the past year, the community has been actively participating in working groups that span the range of astrophysics themes to identify the driving science cases that will inform the design and architecture of HWO. In this talk, we present an overview of the Galaxy Growth Working Group activities and the key science cases identified by the various community-led sub-groups that will inform the HWO capabilities for addressing some of the most fundamental questions related to galaxy formation and evolution. Specifically, we will review science cases addressing the SMBH-Galaxy co-evolution process, the role of the circumgalactic medium in the galactic ecosystem, direct characterization of UV ionizing radiation since z = 1, and constraining the nature of dark matter properties from the small-scale galaxy power spectrum.

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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.