# The ALMA REBELS Survey: The Cosmic H i Gas Mass Density in Galaxies at z ≈ 7

@article{Heintz2022TheAR,
title={The ALMA REBELS Survey: The Cosmic H i Gas Mass Density in Galaxies at z ≈ 7},
author={Kasper E. Heintz and Pascal A. Oesch and Manuel Aravena and Richard Bouwens and Pratika Dayal and A. Ferrara and Yoshinobu Fudamoto and Luca Graziani and Hanae Inami and Laura Sommovigo and Renske Smit and Mauro Stefanon and Michael W. Topping and Andrea Pallottini and Paul P. van der Werf},
journal={The Astrophysical Journal Letters},
year={2022},
volume={934}
}
• Published 15 June 2022
• Physics
• The Astrophysical Journal Letters
The neutral atomic gas content of individual galaxies at large cosmological distances has until recently been difficult to measure due to the weakness of the hyperfine H i 21 cm transition. Here we estimate the H i gas mass of a sample of main-sequence star-forming galaxies at z ∼ 6.5–7.8 surveyed for [C ii] 158 μm emission as part of the Reionization Era Bright Emission Line Survey (REBELS), using a recent calibration of the [C ii]-to-H i conversion factor. We find that the H i gas mass excess…
3 Citations
• Physics
• 2022
Galaxies throughout the last 12 Gyr of cosmic time follow a single, universal fundamental plane that relates their star-formation rates (SFRs), stellar masses ( M (cid:63) ) and chemical abundances
• Physics
The Astrophysical Journal Letters
• 2022
One of the most fundamental baryonic matter components of galaxies is the neutral atomic hydrogen (H i). At low redshifts, this component can be traced directly through the 21 cm transition, but to

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