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Meriem Beheri (SISSA, Italy)

Meriem Beheri Colloquium: Radio Selected NIR-dark sources shedding light on the dark side of high redshift SFR

The Australia Telescope National Facility Colloquium
15:00-16:00 Wed 05 Oct 2022



About 12 billion years ago, the Universe was first experiencing light again
after the dark ages, and galaxies filled the environment with stars, metals, and
dust. How efficient was this process, and how fast did these primordial galaxies
form stars and dust? We can answer these questions by tracing galaxies star
formation rate density (SFRD) back to its unexplored high redshift tail, traditionally
observed in the Near-InfraRed (NIR), Optical, and UV-bands. This
means that the dustiest objects were missing. Further, most studies on dustobscured
galaxies at high redshift have been conducted in the sub-millimetre,
possibly affected by dust temperature biases. In this talk, I will introduce you
to the characterisation of Radio Selected NIR-dark (RS-NIRdark) sources in
different fields with a panchromatic approach and new SED-fitting techniques
developed by the GOThA (Galaxy Observational and Theoretical Astrophysics)
group in SISSA.


Vivek Gupta

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