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Small Protogalaxies Revealing Origins and Unfolding into Today’s dwarfs

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One of the central challenges in astrophysics is to understand how galaxies formed in the first billion years after the Big Bang and then evolved to the present day. The key physical drivers—star formation, supernova explosions, chemical enrichment, and black hole growth—are inherently small-scale, yet they shape the observable Universe on larger scales. Current galaxy simulations struggle to capture these processes, relying on simplified prescriptions that limit predictive power.

Dwarf galaxies pose a timely and compelling link. Every galaxy began its life as a dwarf, making them the natural “sprouts” of cosmic structure. They are the first sites of star formation and the most computationally accessible laboratories for testing galaxy formation physics today.

SPROUT will revolutionize our theoretical understanding by developing ultra-high-resolution cosmological simulations that model, from basic principles, the processes that regulate galaxy growth: gas cooling, stellar feedback, radiation, cosmic rays, and the seeding of the first black holes. By tracing how the smallest galaxies at cosmic dawn evolve into the dwarf populations we observe today, SPROUT will unify high- and low-redshift observations into a single theoretical framework.

Predictions will be directly tested against JWST and ALMA detections of early galaxies, and against Euclid, DESI, MeerKAT and LSST surveys of nearby dwarfs. By linking the first galaxies to their modern descendants, SPROUT will provide essential context for observations, establishing dwarf galaxies as the key to unlocking the origins and physics of galaxy formation.

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(öffnet in neuem Fenster) ERC-2026-STG

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Gastgebende Einrichtung

ISTITUTO NAZIONALE DI ASTROFISICA
Netto-EU-Beitrag
€ 1 496 500,00
Adresse
VIALE DEL PARCO MELLINI 84
00136 ROMA
Italien
Region
Centro (IT) Lazio Roma
Aktivitätstyp
Research Organisations
Links
Gesamtkosten
€ 1 496 500,00

Begünstigte (2)