Scheda SBF
FINAL
Informazioni generali
Surface brightness fluctuations: measurements and models beyond 2023 (Rubin-LSST-4)
SBF
Programma
Programma
RSN1
RSN2
Attività: In Itinere; Data inizio: 2023; Data fine: 2030
michele.cantiello michele.cantiello@inaf.it
Il metodo delle fluttuazioni di brillanza superficiale (SBF) è fra gli indicatori di distanza cosmologici più robusti: con una precisione paragonabile a SNeIa e Cefeidi (∼5% per galassia) senza i limiti della casualità delle SNe o le lunghe campagne osservative richieste per le Cefeidi. Inoltre, viene utilizzato dall'universo locale fino a distanze rilevanti per la stima di H0.
Dall'inizio del 2000, un team di ricercatori dell'INAF-OAAb ha iniziato ad interessarsi al metodo SBF. Inizialmente con lo sviluppo di strumenti per il modeling delle SBF utilizzando la sintesi di popolazione stellare, quindi anche con la definizione di una procedura originale di misura. Questi sforzi ci hanno permesso di ottenere un ruolo riconosciuto a livello internazionale su questo argomento di ricerca.
The surface brightness fluctuations (SBF) method is one of the most robust extragalactic distance indicators: with an accuracy comparable to SNeIa and Cepheids (∼5% per galaxy) without the limitations of the serendipitousness intrinsic of SNe, or the long observing campaigns needed for Cepheids. Moreover, it is used in a wide range of distances: from very local, out to values relevant for measuring H0.
In early 2000, a team of researchers at the INAF-OAAb began working on the SBF method in different aspects. First, developing the tools for the modeling of SBF magnitudes using stellar population synthesis methods, then also defining an original procedure for measuring SBF from observations. These efforts allowed us to gain a worldwide recognized role on this research topic.
Ammassi, struttura a grande scala dell Universo e mezzo intergalattico
Cosmologia teorica ed osservativa
Popolazioni e ammassi stellari galattici ed extragalattici
Team Summary
15. Personale INAF coinvolto
Numero di partecipanti INAF al progetto: 5
| Struttura | Nfte | N0 | TI 2023 | TI 2024 | TI 2025 | TD 2023 | TD 2024 | TD 2025 | Nex | Extra |
|---|---|---|---|---|---|---|---|---|---|---|
| O.A. ABRUZZO | 3 | 0 | 0.90 | 0.90 | 0.90 | 0 | 0 | 0 | 0 | 0.00 |
| O.A. ROMA | 0 | 0 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0 | 0 | 0.00 |
| Totali | 3 | 0 | 0.90 | 0.90 | 0.90 | 0.00 | 0.00 | 0.00 | 0 | 0.00 |
16. Personale Associato INAF coinvolto
Numero di partecipanti Associati INAF: 4
| # | Struttura | TI 2023 | TI 2024 | TI 2025 | TD 2023 | TD 2024 | TD 2025 | Extra |
|---|---|---|---|---|---|---|---|---|
| 1 | GSSI | 0.00 | 0.00 | 0.00 | 0.50 | 0.30 | 0.30 | 0.00 |
| 2 | Gemini | 0.00 | 0.00 | 0.00 | 0 | 0 | 0 | 0.00 |
| 3 | Utah Valley University | 0.00 | 0.00 | 0.00 | 0 | 0 | 0 | 0.00 |
| Totali | 0.00 | 0.00 | 0.00 | 0.50 | 0.30 | 0.30 | 0.00 |
Fondi a sostegno
21. Totale fondi a disposizione (dato aggregato, k€)
| Certi 2023 | Certi 2024 | Certi 2025 | Presunti 2023 | Presunti 2024 | Presunti 2025 |
|---|---|---|---|---|---|
| 44.0 | 44.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Produzione scientifica e tecnologica
22. Produzione scientifica e tecnologica - Highlights
Informazioni Pubbliche
<p>SCHEDE: Rubin-LSST-4 (scheda madre LSST); GRAWITA (GRAvitational Wave Inaf TeAm); Einstein Telescope (ET); </p><p>RESEARCH LINES: Galaxy distances; Galaxy environments; Elliptical galaxies; Galaxy clusters; Galaxy groups; Stellar populations; Population II stars</p>
Except for the collaborators that occasionally join the work of our team because of common research interests, we are not aware of anyone within INAF working on the science topic of SBF.
<p>Past usage: VLT (mainly FORS); CFHT; HST (ACS, WFC3) </p><p>Future applications: Rubin-LSST; JWST; ELT; Euclid </p>
15. Team members, Informazioni generali
15. Personale INAF coinvolto
| # | Nome | Struttura | TI | Qualifica | Ruolo nel Progetto | FTE Impegnate (2023/2024/2025) | FTE Presunte (2023/2024/2025) | Extra | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | michele.cantiello | michele.cantiello@inaf.it | O.A. ABRUZZO | Y | RICERCATORE | Team coordinator, SBF measurement | X X X | X X X | X |
|
| 2 | gabriella.raimondo | gabriella.raimondo@inaf.it | O.A. ABRUZZO | Y | RICERCATORE | SBF simulations | X X X | X X X | X |
|
| 3 | enzo.brocato | enzo.brocato@inaf.it | O.A. ABRUZZO | Y | PRIMO RICERCATORE | Data analysis and stellar population modeling | X X X | X X X | X |
|
| 4 | matteo.canzari | matteo.canzari@inaf.it | O.A. ABRUZZO | Y | TECNOLOGO | Computer scientist | X X X | X X X | X |
|
| 5 | roberta.carini | roberta.carini@inaf.it | O.A. ROMA | Y | RICERCATORE | Analysis and modeling | X X X | X X X | X |
|
16. Personale Associato INAF coinvolto
| # | Nome | Struttura | TI | Qualifica | Ruolo nel Progetto | FTE Impegnate (2023/2024/2025) | FTE Presunte (2023/2024/2025) | Extra | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | nandini.hazra | nandini.hazra@gssi.it | GSSI | N | dottorando | SBF measurement from Rubin-LSST-like data | [0.5, 0.3, 0.3] | [0.2, 0.3, 0.3] | 0.0 |
| 2 | marica.branchesi | marica.branchesi@gssi.it | GSSI | Y | Professoressa Ordinaria | Analysis of distances related to GW events | [0, 0, 0] | [0.0, 0.0, 0.0] | 0.0 |
| 3 | john p. blakeslee | jblakeslee@gemini.edu | Gemini | Y | Astronomer at Gemini | SBF measurements and analysis | [0, 0, 0] | [0.0, 0.0, 0.0] | 0.0 |
| 4 | joseph.jensen | joseph.jensen@uvu.edu | Utah Valley University | Y | Professor | Measurement and analysis of SBF | [0, 0, 0] | [0.0, 0.0, 0.0] | 0.0 |
21. Fondi a Sostegno Iniziativa
We started the study on SBF in ~2000, most of the program was supported by Italian agencies. One exception is the HST/NSF grant of ~100.000USD obtained in 2005 in support of an HST archival research project (ID:10642, scientific PI M. Cantiello, admin. PI J. Blakeslee). The Scheda coordinator and other affiliated had different post-doc positions supported with grants dedicated to SBF measurements or modeling. We estimate a total of ~300k€ funding on this line of research in the years between 2000-2022, calculated as ~15k€/yr including funding for postdocs which were at least 0.5 FTE working on this program. For the next few years we conservatively assume ~2.5k€/yr. We estimate about 1/3rd of the total funding was from INAF. To date we have a PhD hired 50% by INAF (2019-2023, ~10k€/yr) and, within the INAF Rubin-LSST proposal's funding scheme, we expect a post-doc hired starting from 2024 (F.O. 1.05.03.06). In the framework of the 2022 INAF funding scheme, we were approved the funds to open a position for hiring a two-years post doc (Large grant: “INAF Exploration of Diffuse Galaxies with Euclid”, INAF-EDGE PI L. Hunt), on the topic of Surface brightness fluctuation distances with simulated Euclid images. The call is to date (March 2023) still open. The hiring will likely happen in mid 2023.
Tabella fondi:
| # | 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€) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | INAF | 44 | 44 | 0 | 0 | 0 | 0 | 88 | 0 |
Tabella fondi Astrofisica Fondamentale e PNRR:
| # | Provenienza | Fondi 2023 (€) | Fondi 2024 (€) | Fondi 2025 (€) |
|---|