The ALMA-CRISTAL survey: Gas, dust, and stars in star-forming galaxies when the Universe was ~1 Gyr old I. Survey overview and case studies

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Autori principali:	Herrera-Camus, R., González-López, J., Schreiber, N. Förster, Aravena, M., de Looze, I., Spilker, J., Tadaki, K., Barcos-Muñoz, L., Assef, R. J., Birkin, J. E., Bolatto, A. D., Bouwens, R., Bovino, S., Bowler, R. A. A., Rivera, G. Calistro, da Cunha, E., Davies, R. I., Davies, R. L., Díaz-Santos, T., Ferrara, A., Fisher, D., Genzel, R., Hodge, J., Ikeda, R., Killi, M., Lee, L., Li, Y., Li, J., Liu, D., Lutz, D., Mitsuhashi, I., Narayanan, D., Naab, T., Palla, M., Price, S. H., Posses, A., Relaño, M., Smit, R., Solimano, M., Sternberg, A., Tacconi, L., Telikova, K., Übler, H., van der Giessen, S. A., Veilleux, S., Villanueva, V., Baeza-Garay, M.
Natura:	Preprint
Pubblicazione:	2025
Soggetti:	Astrophysics of Galaxies
Accesso online:	Acceder al recurso
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author	Herrera-Camus, R. González-López, J. Schreiber, N. Förster Aravena, M. de Looze, I. Spilker, J. Tadaki, K. Barcos-Muñoz, L. Assef, R. J. Birkin, J. E. Bolatto, A. D. Bouwens, R. Bovino, S. Bowler, R. A. A. Rivera, G. Calistro da Cunha, E. Davies, R. I. Davies, R. L. Díaz-Santos, T. Ferrara, A. Fisher, D. Genzel, R. Hodge, J. Ikeda, R. Killi, M. Lee, L. Li, Y. Li, J. Liu, D. Lutz, D. Mitsuhashi, I. Narayanan, D. Naab, T. Palla, M. Price, S. H. Posses, A. Relaño, M. Smit, R. Solimano, M. Sternberg, A. Tacconi, L. Telikova, K. Übler, H. van der Giessen, S. A. Veilleux, S. Villanueva, V. Baeza-Garay, M.
author_facet	Herrera-Camus, R. González-López, J. Schreiber, N. Förster Aravena, M. de Looze, I. Spilker, J. Tadaki, K. Barcos-Muñoz, L. Assef, R. J. Birkin, J. E. Bolatto, A. D. Bouwens, R. Bovino, S. Bowler, R. A. A. Rivera, G. Calistro da Cunha, E. Davies, R. I. Davies, R. L. Díaz-Santos, T. Ferrara, A. Fisher, D. Genzel, R. Hodge, J. Ikeda, R. Killi, M. Lee, L. Li, Y. Li, J. Liu, D. Lutz, D. Mitsuhashi, I. Narayanan, D. Naab, T. Palla, M. Price, S. H. Posses, A. Relaño, M. Smit, R. Solimano, M. Sternberg, A. Tacconi, L. Telikova, K. Übler, H. van der Giessen, S. A. Veilleux, S. Villanueva, V. Baeza-Garay, M.
contents	We present the ALMA-CRISTAL survey, an ALMA Cycle 8 Large Program designed to investigate the physical properties of star-forming galaxies at $4 \lesssim z \lesssim 6$ through spatially resolved, multi-wavelength observations. This survey targets 19 star-forming main-sequence galaxies selected from the ALPINE survey, using ALMA Band 7 observations to study [CII] 158 $μ$m line emission and dust continuum, complemented by JWST/NIRCam and HST imaging to map stellar and UV emission. The CRISTAL sample expanded to 39 after including newly detected galaxies in the CRISTAL fields, archival data, and pilot study targets. The resulting dataset provides a detailed view of gas, dust, and stellar structures on kiloparsec scales at the end of the era of reionization. The survey reveals diverse morphologies and kinematics, including rotating disks, merging systems, [CII] emission tails from potential interactions, and clumpy star formation. Notably, the [CII] emission in many cases extends beyond the stellar light seen in HST and JWST imaging. Scientific highlights include CRISTAL-10, exhibiting an extreme [CII] deficit similar to Arp 220; and CRISTAL-13, where feedback from young star-forming clumps likely causes an offset between the stellar clumps and the peaks of [CII] emission. CRISTAL galaxies exhibit global [CII]/FIR ratios that decrease with increasing FIR luminosity, similar to trends seen in local galaxies but shifted to higher luminosities, likely due to their higher molecular gas content. CRISTAL galaxies also span a previously unexplored range of global FIR surface brightness at high-redshift, showing that high-redshift galaxies can have elevated [CII]/FIR ratios. These elevated ratios are likely influenced by factors such as lower metallicity gas, the presence of significant extraplanar gas, and contributions from shock-excited gas.
format	Preprint
id	arxiv_https___arxiv_org_abs_2505_06340
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	The ALMA-CRISTAL survey: Gas, dust, and stars in star-forming galaxies when the Universe was ~1 Gyr old I. Survey overview and case studies Herrera-Camus, R. González-López, J. Schreiber, N. Förster Aravena, M. de Looze, I. Spilker, J. Tadaki, K. Barcos-Muñoz, L. Assef, R. J. Birkin, J. E. Bolatto, A. D. Bouwens, R. Bovino, S. Bowler, R. A. A. Rivera, G. Calistro da Cunha, E. Davies, R. I. Davies, R. L. Díaz-Santos, T. Ferrara, A. Fisher, D. Genzel, R. Hodge, J. Ikeda, R. Killi, M. Lee, L. Li, Y. Li, J. Liu, D. Lutz, D. Mitsuhashi, I. Narayanan, D. Naab, T. Palla, M. Price, S. H. Posses, A. Relaño, M. Smit, R. Solimano, M. Sternberg, A. Tacconi, L. Telikova, K. Übler, H. van der Giessen, S. A. Veilleux, S. Villanueva, V. Baeza-Garay, M. Astrophysics of Galaxies We present the ALMA-CRISTAL survey, an ALMA Cycle 8 Large Program designed to investigate the physical properties of star-forming galaxies at $4 \lesssim z \lesssim 6$ through spatially resolved, multi-wavelength observations. This survey targets 19 star-forming main-sequence galaxies selected from the ALPINE survey, using ALMA Band 7 observations to study [CII] 158 $μ$m line emission and dust continuum, complemented by JWST/NIRCam and HST imaging to map stellar and UV emission. The CRISTAL sample expanded to 39 after including newly detected galaxies in the CRISTAL fields, archival data, and pilot study targets. The resulting dataset provides a detailed view of gas, dust, and stellar structures on kiloparsec scales at the end of the era of reionization. The survey reveals diverse morphologies and kinematics, including rotating disks, merging systems, [CII] emission tails from potential interactions, and clumpy star formation. Notably, the [CII] emission in many cases extends beyond the stellar light seen in HST and JWST imaging. Scientific highlights include CRISTAL-10, exhibiting an extreme [CII] deficit similar to Arp 220; and CRISTAL-13, where feedback from young star-forming clumps likely causes an offset between the stellar clumps and the peaks of [CII] emission. CRISTAL galaxies exhibit global [CII]/FIR ratios that decrease with increasing FIR luminosity, similar to trends seen in local galaxies but shifted to higher luminosities, likely due to their higher molecular gas content. CRISTAL galaxies also span a previously unexplored range of global FIR surface brightness at high-redshift, showing that high-redshift galaxies can have elevated [CII]/FIR ratios. These elevated ratios are likely influenced by factors such as lower metallicity gas, the presence of significant extraplanar gas, and contributions from shock-excited gas.
title	The ALMA-CRISTAL survey: Gas, dust, and stars in star-forming galaxies when the Universe was ~1 Gyr old I. Survey overview and case studies
topic	Astrophysics of Galaxies
url	https://arxiv.org/abs/2505.06340