Composite image of the central region of the Shapley Concentration. In the background, the optical emission from the galaxies observed by the ESO-VST at r wavelengths; the emission from the hot gas permeating the entire region is shown in blue and was detected by XMM-Newton; and the radio emission, detected by MeerKAT, is shown in red. The entire image covers an area of sky of about 3 × 1.5 Mpc (or 10 × 5 million light-years). The panels zoom in on the ram-stripped galaxy and the head-and-tail radio galaxy and show the radio emission at higher angular resolution (in red) overlaid on the ESO-VST r-wavelength optical image. Credit: G. Di Gennaro
HI-GalESS – Tracing Galaxy Evolution in the Shapley Supercluster with neutral hydrogen
In the context of the study of the Shapley Supercluster, identified with the Scheda ShapleyS (PI Merluzzi) Scheda ShapleyS), I obtained a mini-grant to open a new area of investigation in the Shapley Supercluster Core (SSC): the study of the role of environment (filaments, poor groups, relaxed and merging rich clusters) on galaxy evolution by means of the detection of neutral hydrogen. The size of the region of interest is very large, and for this study we focus on the central 23 square degrees. The starting point of our project are the readily available HI data cubes on A3558 and SC1329-313 from the MeerKAT Galaxy Cluster Legacy Survey (MGCLS). Additional MeerKAT observations were obtained for 5 more paintings, as part of a PhD project supervised by INAF and Rhodes University/SARAO.
Our HI dataset is complemented by a wealth of proprietary data from radio to X, and will soon benefit from the CHANCES 4MOST observations of the SSC. We obtained a total 20.000 Euros for travels and meetings to feed the new and long-standing collaborations on this project, which involve colleagues in Europe, Chile, Australia, US and South Africa.
Our HI dataset is complemented by a wealth of proprietary data from radio to X, and will soon benefit from the CHANCES 4MOST observations of the SSC. We obtained a total 20.000 Euros for travels and meetings to feed the new and long-standing collaborations on this project, which involve colleagues in Europe, Chile, Australia, US and South Africa.
Planned activities:
The funding are used to support:
• participation at meeting and conferences;
• the PhD student Lwandile Gwebushe when visiting INAF to make progress on his PhD thesis;
• svisit exchanges among participants at various stages of the project;
• publication fees.
• participation at meeting and conferences;
• the PhD student Lwandile Gwebushe when visiting INAF to make progress on his PhD thesis;
• svisit exchanges among participants at various stages of the project;
• publication fees.
Start: 2025
Duration: 2 years
Financing program: Ricerca fondamentale 2024
Referent: Tiziana Venturi (INAF)
Collaborators: Merluzzi Paola (OA Capodimonte), Busarello Giovanni (OA Capodimonte), Smirnov Oleg (SARAO & Associato INAF), Gwebushe Lwandile (Rhodes University & Associato INAF)
Duration: 2 years
Financing program: Ricerca fondamentale 2024
Referent: Tiziana Venturi (INAF)
Collaborators: Merluzzi Paola (OA Capodimonte), Busarello Giovanni (OA Capodimonte), Smirnov Oleg (SARAO & Associato INAF), Gwebushe Lwandile (Rhodes University & Associato INAF)