Strong damped Lyman-α absorption in young star-forming galaxies at redshifts 9 to 11-Reference-Cited by-同舟云学术

Strong damped Lyman-α absorption in young star-forming galaxies at redshifts 9 to 11

Published:2024-05-24 Issue:6698 Volume:384 Page:890-894
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Heintz Kasper E.¹²^ORCID,Watson Darach¹²^ORCID,Brammer Gabriel¹²^ORCID,Vejlgaard Simone¹²^ORCID,Hutter Anne¹²,Strait Victoria B.¹²,Matthee Jorryt³^ORCID,Oesch Pascal A.¹²⁴^ORCID,Jakobsson Páll⁵^ORCID,Tanvir Nial R.⁶^ORCID,Laursen Peter¹²^ORCID,Naidu Rohan P.⁷^ORCID,Mason Charlotte A.¹²,Killi Meghana¹²^ORCID,Jung Intae⁸^ORCID,Hsiao Tiger Yu-Yang⁹,Abdurro’uf ⁸⁹^ORCID,Coe Dan⁸⁹^ORCID,Haro Pablo Arrabal¹⁰^ORCID,Finkelstein Steven L.¹¹^ORCID,Toft Sune¹²^ORCID

Affiliation:

1. Cosmic Dawn Center, Copenhagen, Denmark.

2. Niels Bohr Institute, University of Copenhagen, DK-2200 Copenhagen N, Denmark.

3. Institute of Science and Technology Austria, 2400 Klosterneuburg, Austria.

4. Observatoire de Genève, Université de Genève, CH-1290 Versoix, Switzerland.

5. Centre for Astrophysics and Cosmology, Science Institute, University of Iceland, Reykjavík, Iceland.

6. School of Physics and Astronomy, University of Leicester, LE1 7RH Leicester, UK.

7. Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

8. Space Telescope Science Institute, Baltimore, MD 21218, USA.

9. Center for Astrophysical Sciences, Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA.

10. National Optical-Infrared Astronomy Research Laboratory, National Science Foundation, Tucson, AZ 85719, USA.

11. Department of Astronomy, The University of Texas at Austin, Austin, TX 78712, USA.

Abstract

Primordial neutral atomic gas, mostly composed of hydrogen, is the raw material for star formation in galaxies. However, there are few direct constraints on the amount of neutral atomic hydrogen (H i ) in galaxies at early cosmic times. We analyzed James Webb Space Telescope (JWST) near-infrared spectroscopy of distant galaxies, at redshifts ≳8. From a sample of 12 galaxies, we identified three that show strong damped Lyman-α absorption due to H i in their local surroundings. The galaxies are located at spectroscopic redshifts of 8.8, 10.2, and 11.4, corresponding to 400 to 600 million years after the Big Bang. They have H i column densities ≳10 22 cm −2 , which is an order of magnitude higher than expected for a fully neutral intergalactic medium, and constitute a gas-rich population of young star-forming galaxies.

Publisher

American Association for the Advancement of Science (AAAS)

Link

https://www.science.org/doi/pdf/10.1126/science.adj0343

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