Probing Galaxy Evolution at Cosmic Noon with Lensed DSFGs: A Multi-Wavelength Approach from Far-infrared to Radio
IFPU
April 20 – April 24, 2026
The cosmic noon (z~1-3) is an important epoch for the evolution of galaxies, where the cosmic star- formation rate density (SFRD), the molecular gas density, and the nuclear activity peak. At such an epoch, understanding the properties of individual galaxies, particularly, the dusty star-forming galaxies, which are known to have a higher contribution to the SFRD is vital to our understanding of galaxy evolution and mass assembly. We focus on a pilot sample of 8 strongly-lensed dusty star-forming galaxies to gain insights on the nature and physical properties such as star-formation, mass-assembly and nuclear activity in these galaxies. The niche that such a sample provides is twofold: first, availability of multi-wavelength observations, from Herschel in the FIR (the H-ATLAS survey), multi-band ALMA observations at high- resolution (< 0.4″), observing both the dust continuum and CO emission lines, 2.1 GHz ATCA observations from SHORES, and, ancillary observations from HST, Spitzer, KiDS, DES, VIKING – the availability of such rich multi-wavelength observation is key to constraining the properties of these galaxies; Second, strong lensing boosts the apparent fluxes facilitating the detection of intrinsically faint sources that would otherwise remain undetected, and additionally increases the apparent resolution, thereby allowing us to probe these galaxies on a sub-kpc scale. With such an exquisite data in hand, we aim to characterise the resolved spectral energy distributions of these galaxies, probe the nuclear activity and understand their intrinsic properties. The proposed meeting is timely and necessary to foster new collaborations with experts in these topics and is very valuable to the completion of this project.
Organisers:
- Gayathri Gururajan (IFPU)
- Andrea Lapi (SISSA)
Participants:
- George Bendo (UK ALMA Regional Centre Node, University of Manchester)
- Marika Giulietti (INAF/IRA Bologna)
- Meriem Behiri (INAF/OAS Bologna)
- Tommaso Ronconi (INAF/IRA Bologna)
- Giovanni Gandolfi (INAF Rome)