| 3MM-1 | |
|---|---|
| Observation data (J2000 epoch) | |
| Constellation | Sextans |
| Right ascension | 10 02 36.82 |
| Declination | +02° 08′ 40.60″ |
| Redshift | 5.5+1.2 −1.1 |
| Distance | 12.5×10 light years |
| Characteristics | |
| Mass | 10 M☉ |
| Other designations | |
| 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. 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", 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. In the same dataset, another dust-obscured star-forming galaxy, 3MM-2, was found at a redshift of about 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.
3MM-1 has a mass of about 10 solar masses, and stars form in it at about 100 times the rate as in the Milky Way.
References
- "[WLS2019] 3MM-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-14.
- ^ Williams, Christina C.; Labbe, Ivo; Spilker, Justin; Stefanon, Mauro; Leja, Joel; Whitaker, Katherine; Bezanson, Rachel; Narayanan, Desika; Oesch, Pascal; Weiner, Benjamin (2019). "Discovery of a Dark, Massive, ALMA-only Galaxy at z ~ 5–6 in a Tiny 3 mm Survey". The Astrophysical Journal. 884 (2): 154. arXiv:1905.11996. Bibcode:2019ApJ...884..154W. doi:10.3847/1538-4357/ab44aa. ISSN 1538-4357. S2CID 168169681.
- ^ University of Arizona (22 October 2019). "Cosmic Yeti from the Dawn of the Universe Found Lurking in Dust". UANews. Retrieved 2019-10-22.
- Bezanson, Rachel; Spilker, Justin; Williams, Christina C.; Whitaker, Katherine E.; Narayanan, Desika; Weiner, Benjamin; Franx, Marijn (2019). "Extremely Low Molecular Gas Content in a Compact, Quiescent Galaxy at z = 1.522". The Astrophysical Journal. 873 (2): L19. arXiv:1902.09564. Bibcode:2019ApJ...873L..19B. doi:10.3847/2041-8213/ab0c9c. hdl:10150/633284. ISSN 2041-8213. S2CID 119192706.
- Zavala, Jorge A. (1 January 2021). "A Tentative Emission Line at z = 5.8 from a 3 mm Selected Galaxy". Research Notes of the AAS. 5 (1): 15. arXiv:2102.07772. Bibcode:2021RNAAS...5...15Z. doi:10.3847/2515-5172/abdd26. S2CID 231933907.
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