A massive stellar bulge in a regularly rotating galaxy 1.2 billion years after the Big Bang-Reference-Cited by-同舟云学术

A massive stellar bulge in a regularly rotating galaxy 1.2 billion years after the Big Bang

Published:2021-02-12 Issue:6530 Volume:371 Page:713-716
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Lelli Federico¹²^ORCID,Di Teodoro Enrico M.³^ORCID,Fraternali Filippo⁴^ORCID,Man Allison W. S.⁵^ORCID,Zhang Zhi-Yu⁶^ORCID,De Breuck Carlos⁷^ORCID,Davis Timothy A.¹^ORCID,Maiolino Roberto⁸⁹^ORCID

Affiliation:

1. School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, UK.

2. Arcetri Astrophysical Observatory, Istituto Nazionale di Astrofisica, Florence 50125, Italy.

3. Department of Physics & Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA.

4. Kapteyn Astronomical Institute, University of Groningen, Groningen 9700 AV, Netherlands.

5. Dunlap Institute for Astronomy & Astrophysics, University of Toronto, Toronto, ON M5S 3H4, Canada.

6. School of Astronomy and Space Science, Nanjing University, Nanjing 210023, P. R. China.

7. European Southern Observatory, Garching bei München 85748, Germany.

8. Kavli Institute for Cosmology, University of Cambridge, Cambridge CB3 0HA, UK.

9. Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK.

Abstract

Early assembly of a galaxy disk and bulge Galaxy formation in the early Universe is thought to have been a chaotic process, producing disturbed and asymmetric galaxy morphologies. Over billions of years, galaxies dynamically relaxed to form stable morphological features. Lelli et al. observed a distant galaxy at a redshift when the Universe was 1.2 billion years old (see the Perspective by Wardlow). They used gas and dust emission to measure its kinematics, and then modeled the mass distribution within the galaxy. The authors found that the galaxy contains a massive stellar bulge and a regularly rotating disk, features that models predict take billions of years to form. These results indicate that galaxy evolution is a more rapid process than previously thought. Science , this issue p. 713 ; see also p. 674

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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