Surface brightness fluctuations: measurements and models (Rubin-LSST-4)
SBF
Programma
Programma
RSN2
RSN1
Attività: In Itinere; Data inizio: 2002; 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, il nostro team 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 inherent in the serendipitous nature of SNe, or the long observing campaigns needed for Cepheids. Moreover, it is applicable across a wide range of distances, from the very local to values relevant for measuring H0. In the early 2000s, our team at INAF-OAAb began working on the SBF method in various aspects. Initially, we developed the tools for modeling SBF magnitudes using stellar population synthesis methods, then we also defined an original procedure for measuring SBF from observations. These efforts allowed us to gain worldwide recognition in this research topic.
Ammassi, struttura a grande scala dell Universo e mezzo intergalattico
Cosmologia teorica ed osservativa
Galassie, AGN e loro evoluzione
Popolazioni e ammassi stellari galattici ed extragalattici
| Struttura | Nfte | N0 | TI 2024 | TI 2025 | TI 2026 | TD 2024 | TD 2025 | TD 2026 | Nex | Extra |
|---|---|---|---|---|---|---|---|---|---|---|
| O.A. ABRUZZO | 3 | 0 | 0.70 | 0.70 | 0.70 | 0.70 | 0.70 | 0.20 | 0 | 0.00 |
| O.A. ROMA | 1 | 0 | 0.20 | 0.20 | 0.20 | 0 | 0 | 0 | 0 | 0.00 |
| Totali | 4 | 0 | 0.90 | 0.90 | 0.90 | 0.70 | 0.70 | 0.20 | 0 | 0.00 |
| # | Struttura | TI 2024 | TI 2025 | TI 2026 | TD 2024 | TD 2025 | TD 2026 | Extra |
|---|---|---|---|---|---|---|---|---|
| 1 | GSSI | 0.00 | 0.00 | 0.00 | 0.30 | 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 | 0.30 | 0.30 | 0.30 | 0.00 |
| Certi 2024 | Certi 2025 | Certi 2026 | Presunti 2024 | Presunti 2025 | Presunti 2026 |
|---|---|---|---|---|---|
| 123.0 | 44.0 | 0.0 | 0.0 | 35.0 | 35.0 |
<p>SCHEDE: Rubin-LSST-4 (scheda madre LSST); GRAWITA (GRAvitational Wave Inaf TeAm); Einstein Telescope (ET); </p><p>RESEARCH LINES: Galaxy distances; Stellar astrophysics; Galaxy environments; Elliptical galaxies; Galaxy clusters; Galaxy groups; Stellar populations; Population II stars</p>
<p>Except for occasional collaborators who join our team due to shared research interests, we are not aware of anyone within INAF working on the science topic of SBF.</p><p> </p>
<p>Past usage: VLT (mainly FORS); CFHT; HST (ACS, WFC3) </p><p>Future applications: Rubin-LSST; JWST; ELT; Euclid </p>
| # | Nome | Struttura | TI | Qualifica | Ruolo nel Progetto | FTE Impegnate (2024/2025/2026) | FTE Presunte (2024/2025/2026) | Extra | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | michele.cantiello | michele.cantiello@inaf.it | O.A. ABRUZZO | Y | PRIMO RICERCATORE | Team coordinator, SBF measurement | X X X | X X X | X |
|
| 2 | gabriella.raimondo | gabriella.raimondo@inaf.it | O.A. ABRUZZO | Y | PRIMO RICERCATORE | SBF simulations | X X X | X X X | X |
|
| 3 | enzo.brocato | enzo.brocato@inaf.it | O.A. ROMA | Y | DIRIGENTE DI RICERCA | 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 | gabriele.riccio | gabriele.riccio@inaf.it | O.A. ABRUZZO | N | ASSEGNISTA | SBF measurements on LSST data | X X X | X X X | X |
|
| # | Nome | Struttura | TI | Qualifica | Ruolo nel Progetto | FTE Impegnate (2024/2025/2026) | FTE Presunte (2024/2025/2026) | Extra | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | nandini.hazra | nandini.hazra@gssi.it | GSSI | N | dottorando | SBF measurement from Rubin-LSST-like data | [0.3, 0.3, 0.3] | [0.3, 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 |
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 ~330k€ funding on this line of research in the years between 2002-2024, calculated as ~15k€/yr including funding for postdocs which were at least 0.5 FTE working on this program. For the next eight years, we conservatively assume ~2.5k€/yr. We estimate about 1/3rd of the total funding was from INAF. We hired a PhD 50% supported by INAF (2019-2023, ~10k€/yr) and, within the INAF Rubin-LSST proposal's funding scheme, we hired a post-doc starting from 2024 (F.O. 1.05.03.06). In the framework of the 2022 INAF funding scheme, we are in the process of 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 hiring will likely happen in May 2024.
| # | Provenienza | Certi 2024 (k€) | Certi 2025 (k€) | Certi 2026 (k€) | Presun. 2024 (k€) | Presun. 2025 (k€) | Presun. 2026 (k€) | Totale Certi (k€) | Totale Presunti (k€) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | INAF | 44 | 0 | None | 0 | 0 | None | 44 | 0 |
| 2 | INAF-LSST | 35 | 0 | 0 | 0 | 35 | 35 | 35 | 70 |
| 3 | INAF-EDGE | 44 | 44 | 0 | 0 | 0 | 0 | 88 | 0 |
| # | Provenienza | Fondi 2024 (€) | Fondi 2025 (€) | Fondi 2026 (€) |
|---|