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Herschel-ATLAS and ALMA: when strong lensing meets interferometry

Cristina Furlanetto
IF/UFRGS, Brasil

Submillimeter galaxies represent the most active sites of dusty star formation at high redshifts. They have an important role in the study of the assembly of stellar mass and the evolution of massive galaxies in the Universe. However, detailed studies of their intrinsic properties have not been possible with the early instruments due to poor spatial resolution, low sensitivity, or both. We can circumvent these difficulties by studying submillimeter galaxies that are gravitationally lensed and/or by using interferometry. In this seminar, I will present the reconstruction of the emission of strongly lensed submillimeter galaxies discovered by the Herschel-ATLAS survey and observed with ALMA. The results reveal the complex nature of these sources and show the power of combining strong lensing and interferometry to study star formation and the interstellar medium in the high-redshift Universe. I will also present a method for lens modelling that operates in the Fourier domain native to the interferometers.

2018 November 28, 13:30

Centro de Astrofísica da Universidade do Porto (Auditorium)
Rua das Estrelas, 4150-762 Porto

Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia