Proto-Globular Clusters in Numerical simulations and in lensed fields
PERSONNEL
Programma
Programma
RSN1
RSN2
Attività: Nuova; Data inizio: 2021; Data fine: 2023
francesco.calura francesco.calura@inaf.it
Il nostro gruppo ha contribuito in modo determinante alla scoperta di alcuni sistemi stellari molto densi e compatti ad alto redshift,
che presentano masse e dimensioni del tutto paragonabili a quelle tipiche degli ammassi globulari.
I nostri risultati hanno motivato diversi tentativi di spiegare la presenza di tali sistemi in modelli cosmologici.
Tuttavia, nella maggior parte degli studi condotti fino ad ora, gli ammassi stellari non sono modellati ab-initio,
quindi essi non spiegano i processi fisici che causano la loro formazione in aloni di materia oscura.
In questo progetto 1) eseguiremo simulazioni con risoluzione sub-pc di
ammassi stellari in contesto cosmologico e 2) confronteremo le loro proprietà con le osservazioni di sistemi locali ed in campi lensati.
Our group is a major contributor to the detection of a few very dense, compact, star-forming systems at high redshift, with mass ~10^6 Msun and sizes of the order of ~10 pc.
Such features imply average stellar densities comparable to those of globular clusters.
Our results motivated several attempts to account for the presence of such systems in cosmological models.
However, in most studies carried on so far, clusters are 'sub-grid' ingredients,
hence they are unable to provide clues on the physical processes regulating their formation within dark
matter halos. In this project we will 1) run sub-pc resolution simulations in a cosmological
context to resolve the formation of star clusters and 2) compare their properties with observations in the local
Universe and in lensed fields.
Cosmologia teorica ed osservativa
Popolazioni e ammassi stellari galattici ed extragalattici
Mezzo interstellare, formazione di stelle e sistemi planetari
Infrastrutture da Terra (utilizzo)
Infrastrutture dallo spazio per l’osservazione dell Universo (utilizzo)
Struttura | Nfte | N0 | TI 2022 | TI 2023 | TI 2024 | TD 2022 | TD 2023 | TD 2024 | Nex | Extra |
---|---|---|---|---|---|---|---|---|---|---|
OAS BOLOGNA | 5 | 0 | 0.70 | 0.60 | 0.00 | 0 | 0 | 0 | 1 | 0.10 |
O.A. PADOVA | 0 | 0 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0 | 0 | 0.00 |
Totali | 5 | 0 | 0.70 | 0.60 | 0.00 | 0.00 | 0.00 | 0.00 | 1 | 0.10 |
# | Struttura | TI 2022 | TI 2023 | TI 2024 | TD 2022 | TD 2023 | TD 2024 | Extra |
---|---|---|---|---|---|---|---|---|
1 | Univsersità Milano-Bicocca | 0 | 0 | 0 | 0.20 | 0.10 | 0.00 | 0.00 |
2 | UniFe | 0.10 | 0.10 | 0.00 | 0 | 0 | 0 | 0.00 |
3 | Scuola Normale Superiore | 0.00 | 0.00 | 0.00 | 0 | 0 | 0 | 0.00 |
4 | INAF-OAS, Bologna | 0 | 0 | 0 | 0.75 | 1.00 | 0.25 | 0.00 |
Totali | 0.10 | 0.10 | 0.00 | 0.95 | 1.10 | 0.25 | 0.00 |
Certi 2022 | Certi 2023 | Certi 2024 | Presunti 2022 | Presunti 2023 | Presunti 2024 |
---|---|---|---|---|---|
0 | 0 | 0 | 0 | 0 | 0 |
Star Formation; Globular clusters; Extragalactic astronomy; Gravitational lensing
Our team includes members active in several fields: stellar evolution, dynamical and kinematical properties of stellar populations, hydrodynamical simulations of star clusters and cosmological simulations of early galaxies, galaxy cluster physics, gravitational lensing, and observational properties of high-z systems. Our group includes INAF researchers which gave a major contributor to the detection and characterisation of a few very dense, compact, star-forming systems at high redshift, with masses of 10^6 -10^7 Msun and half-light radii of a few tens of pc. Such features imply average stellar density values comparable to those of some old GCs in the Milky Way and M31 galaxies. Our INAF team also includes major experts of the properties of local, old GCs. The heterogeneity of our team places us in a unique position of leadership in a field in which cosmology and stellar astrophysics, or the sciences of high-redshift galaxies and of old GCs are auxiliary to each other.
HST; MUSE; CINECA; ALMA; JWST
# | Nome | Struttura | TI | Qualifica | Ruolo nel Progetto | FTE Impegnate (2022/2023/2024) | FTE Presunte (2022/2023/2024) | Extra | ||
---|---|---|---|---|---|---|---|---|---|---|
1 | francesco.calura | francesco.calura@inaf.it | OAS BOLOGNA | Y | RICERCATORE | Coordinatore | X X X | X X X | X | |
2 | eros.vanzella | eros.vanzella@inaf.it | OAS BOLOGNA | Y | RICERCATORE | Observations of proto-GC | X X X | X X X | X | |
3 | massimo.meneghetti | massimo.meneghetti@inaf.it | OAS BOLOGNA | Y | RICERCATORE | Lensing models | X X X | X X X | X | |
4 | antonio.sollima | antonio.sollima@inaf.it | OAS BOLOGNA | Y | RICERCATORE | Dynamics of stellar systems | X X X | X X X | X | |
5 | emanuele.dalessandro | emanuele.dalessandro@inaf.it | OAS BOLOGNA | Y | RICERCATORE | Observations of Globular Clusters | X X X | X X X | X | |
6 | anita.zanella | anita.zanella@inaf.it | O.A. PADOVA | Y | RICERCATORE | Observations of star-forming clumps | X X X | X X X | X | |
7 | roberto.gilli | roberto.gilli@inaf.it | OAS BOLOGNA | Y | PRIMO RICERCATORE | Observations of galaxies at high-redshift | X X X | X X X | X | |
8 | anna.marino | anna.marino@inaf.it | O.A. PADOVA | Y | RICERCATORE | Observations of Globular Clusters in the Milky Way and satellite galaxies | X X X | X X X | X |
# | Nome | Struttura | TI | Qualifica | Ruolo nel Progetto | FTE Impegnate (2022/2023/2024) | FTE Presunte (2022/2023/2024) | Extra | |
---|---|---|---|---|---|---|---|---|---|
1 | alessandro.lupi | alessandro.lupi@unimib.it | Univsersità Milano-Bicocca | N | senior postdoc | Cosmological simulations | [0.2, 0.1, 0] | [0.0, 0.0, None] | 0.0 |
2 | piero.rosati | rosati@infn.it | UniFe | Y | Professore Ordinario | Clusters of galaxies; gravitational lensing | [0.1, 0.1, 0] | [0.0, 0.0, None] | 0.0 |
3 | stefano.carniani | stefano.carniani@sns.it | Scuola Normale Superiore | Y | Professore Associato | Observations of galaxies at high-redshift | [0, 0, 0] | [0.0, 0.0, None] | 0.0 |
4 | raffaele.pascale | raffaele.pascale@inaf.it | INAF-OAS, Bologna | N | Assegnista di Ricerca | Simulazioni numeriche | [0.75, 1.0, 0.25] | [-1.0, -1.0, -1.0] | -1.0 |
The funds at our disposal are mostly from two grants: a PRIN INAF grant awarded in 2020 (67.5 keuro, PI: Calura) and part of an INAF Main Stream Project awarded in 2019 (originally of 37.5 keuro, PI: Vanzella). As for the latter, considering that the latter grant is to be shared also with researchers of other projects, we can estimate that the funds still at our disposal are ~ 8 keuro. Also a contribution of 1.3 keuro from the INAF-OAS institute has to be be mentioned. The codes of the two awarded projects and their titles are described in the 'funzione obiettivo' section.
# | Provenienza | Certi 2022 (k€) | Certi 2023 (k€) | Certi 2024 (k€) | Presun. 2022 (k€) | Presun. 2023 (k€) | Presun. 2024 (k€) | Totale Certi (k€) | Totale Presunti (k€) |
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# | Provenienza | Fondi 2022 (€) | Fondi 2023 (€) | Fondi 2024 (€) |
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