A new VLBA survey of radio-faint AGN in the COSMOS field
VLBA-COSMOS
Programma
Infrastruttura Internazionale
RSN1
Attività: In Itinere; Data inizio: 2022; Data fine: 2025
ivan.delvecchio ivan.delvecchio@inaf.it
Questa scheda descrive i prospetti scientifici di una recente survey VLBA (PI: Delvecchio) per osservare >500 galassie star-forming ad alto redshift (0.5<z<4.5) nel campo COSMOS. Per la prima volta, questa survey raggiungerà a 1.4 GHz sia una profondità (3.7uJy/beam) che una risoluzione angolare (0.01 arcsec) elevatissime, necessarie per rivelare i nuclei galattivi attivi (AGN) radio più deboli ed elusivi mai cercati finora, e quantificare il loro contributo all'emissione radio rispetto a processi di formazione stellare. Ciò è cruciale per scomporre accuratamente i due contributi e fare un censimento dell'attività di formazione stellare e di AGN ad alto z, che fornirà importanti vincoli ai modelli di formazione delle galassie. Forte sinergia con gli obiettivi di SKA e suoi precursori.
This “scheda” overviews the science objectives of a recent VLBA survey (PI: Delvecchio) to target >500 typical star-forming galaxies at high redshift (0.5 < z < 4.5) in the COSMOS field. For the first time, this survey will reach at 1.4 GHz both ultra-high sensitivity (3.7 uJy/beam) and angular resolution (0.01 arcsec), which is necessary to unveil the most elusive, radio-faint active galactic nuclei (AGN) ever chased for, and quantify their radio contribution relative to star-forming processes. This is key for accurately disentangling the two components and taking a clean census of high-z star formation and radio AGN activity, providing fundamental constraints for galaxy formation models. This program carries a strong synergy with the science goals of SKA and its precursors.
Galassie, AGN e loro evoluzione
Struttura | Nfte | N0 | TI 2023 | TI 2024 | TI 2025 | TD 2023 | TD 2024 | TD 2025 | Nex | Extra |
---|---|---|---|---|---|---|---|---|---|---|
O.A. BRERA | 1 | 0 | 0.50 | 0.50 | 0.50 | 0 | 0 | 0 | 0 | 0.00 |
IRA BOLOGNA | 1 | 0 | 0.10 | 0.10 | 0.10 | 0 | 0 | 0 | 1 | 0.20 |
O.A. TRIESTE | 0 | 0 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0 | 1 | 0.20 |
Totali | 2 | 0 | 0.60 | 0.60 | 0.60 | 0.00 | 0.00 | 0.00 | 2 | 0.40 |
# | Struttura | TI 2023 | TI 2024 | TI 2025 | TD 2023 | TD 2024 | TD 2025 | Extra |
---|---|---|---|---|---|---|---|---|
1 | ex-INAF | 0 | 0 | 0 | 0.00 | 0.00 | 0.00 | 0.10 |
2 | Università di Bologna | 0.00 | 0.00 | 0.00 | 0 | 0 | 0 | 0.00 |
3 | Max-Planck-Institute for Astronomy | 0 | 0 | 0 | 0.00 | 0.00 | 0.00 | 0.00 |
Totali | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 |
Certi 2023 | Certi 2024 | Certi 2025 | Presunti 2023 | Presunti 2024 | Presunti 2025 |
---|---|---|---|---|---|
20 | 0 | 0 | 0 | 0 | 0 |
<p>Active Galaxies; High-redshift galaxies; AGN host galaxies; Active Galactic Nuclei; Radio jets; Radio interferometers; Very long baseline interferometers; SKA_Science</p><p><br></p><p>Connected to "scheda madre": SKA_Galev (Prandoni)<br></p><p><br></p><p>Link to "scheda" SKA (Prandoni) - Preparatory study for SKA1-MID and SKA-VLBI<br></p><p>Link to "scheda" Dual&BinaryAGN (Severgnini) - Search for dual AGN in high-z galaxies<br></p><p>Link to "scheda" DARK (Allevato; co-I: Delvecchio) - AGN in large-scale structures </p>
<p>The core team includes 5 INAF Researchers and 3 INAF Associates, who are all working closely with external collaborators from worldwide Institutes.</p><p>INAF leadership is also demonstrated by the PI-ship or involvement of INAF Staff members in state-of-the-art/legacy radio surveys. Specifically:</p><ul><li>The VLBA survey that builds the present "scheda" is led by Delvecchio, who is a member of COSMOS/EMU/MeerKAT/SKA Extragalactic Continuum SWG.</li><li>The corresponding "scheda madre" (SKA_Galev, awarded a Large Grant in 2022) is coordinated by Prandoni. She has also been leading the RQ AGN WG (EMU/ASKAP) and the eMERGE band-C survey in GOODS-N. Also chair of the Italian SKA Board, team member of LOFAR and MeerKAT Legacy surveys.</li><li>Nearly all INAF members and Associates have been PI of radio (VLA/VLBA/EVN/MeerKAT) proposals of star-forming galaxies or AGN. In particular, Spingola is a recognised expert in data reduction/analysis of all VLBI facilities (and VLBI programs led as PI), a strong asset for this program.<br></li></ul><br>
<p>VLBA; MeerKAT; JVLA; EVN-eMERLIN; SKA </p><p><br></p><p>In addition, other ancillary data exploited in this "scheda" include:</p><p>HST; Herschel; ALMA; AzTEC; SCUBA; Chandra; JWST<br></p>
# | Nome | Struttura | TI | Qualifica | Ruolo nel Progetto | FTE Impegnate (2023/2024/2025) | FTE Presunte (2023/2024/2025) | Extra | ||
---|---|---|---|---|---|---|---|---|---|---|
1 | ivan.delvecchio | ivan.delvecchio@inaf.it | O.A. BRERA | Y | RICERCATORE | Coordinatore / MIGHTEE & SKA-EC SWG / radio AGN/ galaxy evolution / data analysis | X X X | X X X | X | |
2 | isabella.prandoni | prandoni@ira.inaf.it | IRA BOLOGNA | Y | PRIMO RICERCATORE | MIGHTEE member/ radio AGN/ galaxy evolution/ data analysis | X X X | X X X | X | |
3 | cristiana.spingola | cristiana.spingola@inaf.it | IRA BOLOGNA | Y | RICERCATORE | SKA-VLBI SWG member/ radio AGN/ high-z galaxies/ strong lensing/ VLBI data analysis | X X X | X X X | X | |
4 | paola.severgnini | paola.severgnini@inaf.it | O.A. BRERA | Y | RICERCATORE | Dual and binary SMBHs, AGN-galaxy co-evolution, optical, nir, X-ray data analysis | X X X | X X X | X | |
5 | veronica.strazzullo | veronica.strazzullo@inaf.it | O.A. TRIESTE | Y | RICERCATORE | stellar population & structural properties of hi-z galaxies/opt./NIR data analysis/modeling | X X X | X X X | X |
# | Nome | Struttura | TI | Qualifica | Ruolo nel Progetto | FTE Impegnate (2023/2024/2025) | FTE Presunte (2023/2024/2025) | Extra | |
---|---|---|---|---|---|---|---|---|---|
1 | giovanni.zamorani | giovanni zamorani | ex-INAF | N | Quiescente | galaxy evolution / data analysis | [0, 0, 0] | [0.0, 0.0, 0.0] | 0.1 |
2 | myriam.gitti | myriam.gitti@unibo.it | Università di Bologna | Y | Prof Associato | galaxy clusters / radio galaxies/ dual AGN / data analysis | [0, 0, 0] | [0.0, 0.0, 0.0] | 0.0 |
3 | silvia.belladitta | silvia.belladitta@inaf.it | Max-Planck-Institute for Astronomy | N | Post-Doc | high-z universe/ high-z AGNs and blazars /high-z SMBHs / optical, nir, radio data analysis | [0, 0, 0] | [0.0, 0.0, 0.0] | 0.0 |
This entire scheda "VLBA-COSMOS" is linked to a mini-grant request for funding, submitted by the Coordinator in 2022, which has been approved (20 k€). The corresponding scheda madre "SKA_Galev" is linked to a request for Large Grant (PI: Prandoni), which has also been approved.
# | Provenienza | Certi 2023 (k€) | Certi 2024 (k€) | Certi 2025 (k€) | Presun. 2023 (k€) | Presun. 2024 (k€) | Presun. 2025 (k€) | Totale Certi (k€) | Totale Presunti (k€) |
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# | Provenienza | Fondi 2023 (€) | Fondi 2024 (€) | Fondi 2025 (€) |
---|---|---|---|---|
1 | INAF - Mini Grant | 20000.0 |