New Directions in Multi-Wavelength Astrophysics: Using Radio Data to Uncover Properties of Star-Forming Galaxies in the Young Universe

Katarzyna Małek, Darko Donevski, Mahmoud Hamed, Junais, Krzysztof Lisiecki and Gabriele Riccioa

Understanding how galaxies form their stars through cosmic time is one of the main topics in modern astrophysics. Nowadays, we have far-infrared and radio surveys that detect emission from millions of regular star-forming galaxies at the epoch of cosmic noon and beyond. Combining those unique data with optical and near-infrared surveys creates an opportunity to study star formation processes in the young Universe on a wide scale. In the last two years, a unique opportunity to perform a large-volume statistical investigation of star formation in evolving galaxies became possible due to the joint project of the Herschel Extragalactic Legacy Survey (HELP) and the International Low Frequency Array (LOFAR) survey. Multiwavelength data confirmed that far-infrared emission and thermal radio emission are excellent indicators of star-formation activity, while LOFAR radio data are crucial to understand how the addition of low-frequency radio spectra influences our estimates of galaxy star-formation rates. At the same time, both datasets are essential components in the broadband spectral energy modelling process, and using them together can give new quality in the galaxy evolution studies.

Proceedings of the Polish Astronomical Society, vol. 12, 17-26 (2022)

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