3MM-1 explained

3MM-1
Epoch:J2000[1]
Dist Ly:s
Mass:1010.8
Names:[WLS2019] 3MM-1

3MM-1 (also known as COS-3mm-1) is a star-forming galaxy about 12.5 billion light-years away that is obscured by clouds of dust.[2] It is located in the constellation of Sextans. It was first detected in spectroscopic data on rotational transitions of carbon monoxide obtained using the Atacama Large Millimeter Array from 23-24 December 2018, as detailed in an article that was published on 22 October 2019. The authors of this article described the discovery as "serendipitous",[3] since the focus of their planned observations had been on galaxies at redshifts near 1.5 that are quiescent - i.e. do not form stars - and directly observable, yet 3MM-1 was found at a redshift of about 5.5, is forming stars and not directly observable.[3] [4] In the same dataset, another dust-obscured star-forming galaxy, 3MM-2, was found at a redshift of about 3.3.[3]

In early 2021, a more precise estimate of 3MM-1's redshift was published, according to which the value is z = 5.857 ± 0.001.[5]

3MM-1 has a mass of about 1010.8 solar masses, and stars form in it at about 100 times the rate as in the Milky Way.[2]

Notes and References

  1. [WLS2019] 3MM-1. 2021-02-14.
  2. Web site: Cosmic Yeti from the Dawn of the Universe Found Lurking in Dust. University of Arizona. UANews. 22 October 2019 . en. 2019-10-22.
  3. Williams. Christina C.. Labbe. Ivo. Spilker. Justin. Stefanon. Mauro. Leja. Joel. Whitaker. Katherine. Bezanson. Rachel. Narayanan. Desika. Oesch. Pascal. Weiner. Benjamin. Discovery of a Dark, Massive, ALMA-only Galaxy at z ~ 5–6 in a Tiny 3 mm Survey. The Astrophysical Journal. 884. 2. 2019. 154. 1538-4357. 10.3847/1538-4357/ab44aa. 1905.11996. 2019ApJ...884..154W . 168169681 . free .
  4. Bezanson. Rachel. Spilker. Justin. Williams. Christina C.. Whitaker. Katherine E.. Narayanan. Desika. Weiner. Benjamin. Franx. Marijn. Extremely Low Molecular Gas Content in a Compact, Quiescent Galaxy at z = 1.522. The Astrophysical Journal. 873. 2. 2019. L19. 2041-8213. 10.3847/2041-8213/ab0c9c . 1902.09564 . 2019ApJ...873L..19B . 10150/633284. 119192706 . free . free .
  5. Zavala . Jorge A. . A Tentative Emission Line at z = 5.8 from a 3 mm Selected Galaxy . Research Notes of the AAS . 1 January 2021 . 5 . 1 . 15 . 10.3847/2515-5172/abdd26 . 2102.07772. 2021RNAAS...5...15Z . 231933907 . free .

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