The cosmic network feeds early galaxies
UniGE PRESS RELEASE (Octobre 27, 2020)
The first galaxies were formed 200 million years after the birth of the universe. These galaxies accumulated the vast majority of the stars, dust particles and metals they consist of between one and three bil- lion years after the Big Bang, a crucial period for our understanding of how the galaxies were formed. Astronomers from the University of Geneva (UNIGE), based at the Geneva Observatory – together with the ALPINE project’s international consortium of astronomers – have studied 118 galaxies from this period using the ALMA telescope in the highlands of Atacama in Chile. In a total of eight joint articles (four of which were undertaken largely at UNIGE), the astrophysicists suc- ceeded in going back nearly 13 billion years in time to identify the gas and dust composition of the galaxies. Their analyses, featured in the journal Astronomy & Astrophysics, show that early galaxies are mature already, lending support to the existence of a cosmic network capable of supplying them with resources.
This is a joint Press Release with NRAO (USA), CNRS (France), the Universities of Bologna and Padova (Italy), the University of Cambridge and Kavli Institute (UK), the Dawn Centre (Denmark), CalTech (USA), UC Davis (USA), the Keck Foundation (USA), Cornell University (USA), the University of Valparaiso (Chile), IPMU (Japan), NAOJ (Japan), and the Waseda University (Japan).
ALPINE papers in Astronomy & Astrophysics with first authors from UniGE:
Schaerer et al. 10.1051/0004-6361/202037617
Dessauges-Zavadsky et al. 10.1051/0004-6361/202038231
Ginolfi et al. 10.1051/0004-6361/202038284
Fudamoto et al. 10.1051/0004-6361/202038163
ALPINE papers in Astronomy & Astrophysics appearing in the same volume:
Le Fèvre et al. 10.1051/0004-6361/201936965
Béthermin et al. 10.1051/0004-6361/202037649
Cassata et al. 10.1051/0004-6361/202037517
Gruppioni et al. 10.1051/0004-6361/202038487