Project C6

Project leaders: Porciani, Cristiano (AIfA); Riechers, Dominik (PH1)

If a line intensity mapping (LIM) measurement is made, what can we infer about the properties and spatial distribution of the underlying population of emitters? The main objective of sub-project C6 is to answer this question by (i) building estimators for different summary statistics that can be extracted from the maps; (ii) generating realistic mock data sets on which to test the estimators; (iii) building a Bayesian toolkit to reconstruct key properties of the underlying galaxy population from the measured data. Direct applications of our findings to the line intensity maps obtained with FYST in sub-project C3 are an integral part of the research done in C6.

2026

Kabanovic, S.; Ossenkopf-Okada, V.; Schlemmer, S.; Stutzki, J.; Schneider, N.; Graf, U. U.; Asvany, O.; Riechers, D. A.; Guevara, C.; Higgins, R.; Simon, R.; Okada, Y.; Mertens, M.; Schneider, L.; Güsten, R.; Tielens, A. G. G. M.

Space as a spectroscopic laboratory: High-resolution spectroscopy of the [13C II] hyperfine structure with SOFIA/upGREAT Journal Article

In: A&A, vol. 710, pp. L25, 2026.

Links | BibTeX

Spina, B.; Porciani, C.; Bosman, S. E. I.; Davies, F. B.; Garaldi, E.; Keenan, R. P.; Schimd, C.

Detecting the signature of helium reionization through 3HeII 3.46 cm line-intensity mapping Journal Article

In: A&A, vol. 707, pp. A173, 2026.

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Marcuzzo, E.; Porciani, C.; Romano-Díaz, E.; Dizgah, A. M.; Khatri, P.; Viel, M.

Probing the Warm Dark Matter mass with [C II] intensity mapping Journal Article

In: A&A, vol. 707, pp. A148, 2026.

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Faisst, A. L.; Fujimoto, S.; Tsujita, A.; Wang, W.; Nezhad, N.; Loiacono, F.; Übler, H.; Béthermin, M.; Cassata, P.; Dessauges-Zavadsky, M.; Herrera-Camus, R.; Schaerer, D.; Silverman, J. D.; Yan, L.; Aravena, M.; De Looze, I.; Förster Schreiber, N. M.; González-López, J.; Spilker, J. S.; Tadaki, K.; Casey, C. M.; Franco, M.; Harish, S.; McCracken, H. J.; Kartaltepe, J. S.; Koekemoer, A. M.; Khostovan, A. A.; Liu, D.; Rhodes, J.; Robertson, B. E.; Amorin, R.; Assef, R. J.; Battisti, A. J.; Birkin, J. E.; Boquien, M.; Da Cunha, E.; Dam, P.; Davies, R. L.; Gómez-Espinoza, D. A.; Ferrara, A.; Fudamoto, Y.; Gillman, S.; Ginolfi, M.; Gozaliasl, G.; Gruppioni, C.; Hadi, A.; Hathi, N.; Ibar, E.; Ikeda, R.; Inami, H.; Jones, G. C.; Kohandel, M.; Li, Y.; Lin, Y. -H.; Liu, Z.; Liu, L. -J.; Long, A. S.; Magdis, G.; Maraston, C.; Martin, C. L.; Mitsuhashi, I.; Mobasher, B.; Molina, J.; Nanni, A.; Palla, M.; Pallottini, A.; Pozzi, F.; Relano, M.; Ren, W.; Riechers, D. A.; Romano, M.; Sanders, D. B.; Sawant, P.; Shuntov, M.; Smit, R.; Sommovigo, L.; Talia, M.; Vallini, L.; Veraldi, E.; Vergani, D.; Vijayan, A. P.; Villanueva, V.; Zamorani, G.

The ALPINE-CRISTAL-JWST Survey: JWST/IFU Optical Observations for 18 Main-sequence Galaxies at z = 4─6 Journal Article

In: Astrophysical Journal, Supplement, vol. 282, no. 1, pp. 19, 2026.

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2025

Dannhauer, S. M.; Vider, S.; Schneider, N.; Simon, R.; Comeron, F.; Keilmann, E.; Walch, S. K.; Bonne, L.; Kabanovic, S.; Ossenkopf-Okada, V.; Seifried, D.; Csengeri, T.; Djupvik, A.; Gong, Y.; Brunthaler, A.; Rugel, M. R.; Riechers, D. A.; Bontemps, S.; Honingh, N.; Graf, U. U.; Tielens, A. G. G. M.

The Diamond Ring in Cygnus X: Advanced stage of an expanding bubble of ionised carbon Journal Article

In: Astronomy & Astrophysics, vol. 703, iss. A197, pp. 14, 2025.

Links | BibTeX | Data

Marcuzzo, E.; Porciani, C.; Romano-Díaz, E.; Khatri, P.

Constraining the [C II] luminosity function from the power spectrum of line-intensity maps at redshift 3.6 Journal Article

In: A&A, vol. 700, pp. A211, 2025.

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Keilmann, E.; Dannhauer, S. M.; Kabanovic, S.; Schneider, N.; Ossenkopf-Okada, V.; Simon, R.; Bonne, L.; Goldsmith, P. F.; Güsten, R.; Zavagno, A.; Stutzki, J.; Riechers, D. A.; Röllig, M.; Verbena, J. L.; Tielens, A. G. G. M.

[C II]-deficit caused by self-absorption in an ionized carbon-filled bubble in RCW79 Journal Article

In: A&A, vol. 697, pp. L2, 2025.

Links | BibTeX | Data

Riechers, D. A.

Do Unusually Cold Starburst Galaxies Exist? A Case Study Journal Article

In: Astrophysical Journal, vol. 980, no. 1, pp. 59, 2025.

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2024

Karoumpis, C.; Magnelli, B.; Romano-Díaz, E.; Garcia, K.; Dev, A.; Clarke, J.; Wang, T. -M.; Bădescu, T.; Riechers, D. A.; Bertoldi, F.

[CII] line intensity mapping the epoch of reionization with the Prime-Cam on FYST: II. CO foreground masking based on an external catalog Journal Article

In: A&A, vol. 691, pp. A262, 2024.

Links | BibTeX | Data

Fichtner, Y. A.; Mackey, J.; Grassitelli, L.; Romano-Díaz, E.; Porciani, C.

Connecting stellar and galactic scales: Energetic feedback from stellar wind bubbles to supernova remnants Journal Article

In: A&A, vol. 690, pp. A72, 2024.

Links | BibTeX | Data

Clarke, J.; Karoumpis, C.; Riechers, D. A.; Magnelli, B.; Okada, Y.; Dev, A.; Nikola, T.; Bertoldi, F.

[CII] luminosity models and large-scale image cubes based on COSMOS 2020 and ALPINE-ALMA [CII] data back to the epoch of reionisation Journal Article

In: A&A, vol. 689, pp. A101, 2024.

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References

  1. Cantalupo and Porciani, “RADAMESH: cosmological radiative transfer for Adaptive Mesh Refinement simulations”, MNRAS 411, 1678 (2011).
  2. Compostella, Cantalupo, and Porciani, “The imprint of inhomogeneous He II reionization on the H I and He II Ly∂ forest”, MNRAS 435, 3169 (2013).
  3. Garaldi, Compostella, and Porciani, “The Goldilocks problem of the quasar contribution to reionization”, MNRAS 483, 5301 (2019).
  4. Karoumpis, Magnelli, Romano-Díaz, Haslbauer, and Bertoldi, “[CII] line intensity mapping the epoch of reionization with the Prime-Cam on FYST. I. Line intensity mapping predictions using the Illustris TNG hydrodynamical simulation”, A&A 659, A12 (2022).
  5. Magliocchetti and Porciani, “The halo distribution of 2dF galaxies”, MNRAS 346, 186 (2003).
  6. Oddo, Sefusatti, Porciani, Monaco, and Sánchez, “Toward a robust inference method for the galaxybispectrum: likelihood function and model selection”, JCAP 2020, 056 (2020).
  7. Pillepich, Porciani, and Matarrese, “The Bispectrum of Redshifted 21 Centimeter Fluctuations from theDark Ages”, ApJ 662, 1 (2007).
  8. Spina, Porciani, and Schimd, “The HI-halo mass relation at redshift z ∿ 1 from the Minkowski functionals of 21 cm intensity maps”, MNRAS 505, 3492 (2021).
  9. Stacey, Aravena, Basu, and 35 co-authors including, Bertoldi, Graf, Riechers, and Schilke, “CCAT-Prime: science with an ultra-widefield submillimeter observatory on Cerro Chajnantor”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 10700, edited by Marshall and Spyromilio, 107001M (2018).
  10. Tomassetti, Porciani, Romano-Diaz, Ludlow, and Papadopoulos, “Atomic carbon as a powerful tracer of molecular gas in the high-redshift Universe: perspectives for ALMA.”, MNRAS 445, L124 (2014).