A2744 YD4
| A2744_YD4 | |
|---|---|
 This artist’s impression shows what A2744_YD4 might look like.[1] | |
| Observation data (J2000 epoch) | |
| Constellation | Sculptor |
| Right ascension | 00h 14m 24.927s[2] |
| Declination | −30° 22′ 56.15″[2] |
| Redshift | 8.38 [3] |
| Distance | 13.2 billion ly (light-travel distance) |
| Other designations | |
| [ZSM2014] YD4 | |
A2744_YD4 is a very distant young galaxy. This galaxy has first been identified as a possible distant galaxy in 2015 using the Hubble Space Telescope. This detection was made possible because this galaxy lies behind the massive galaxy cluster Abell 2744. In 2017, ALMA observed it and detected a small quantity of dust (the most distant stardust to date) and the first signature of Oxygen emitting light only 600 million years after the Big Bang.[4]
References
[edit]- ^ "Artist's impression of the remote dusty galaxy A2744_YD4". www.eso.org. Retrieved 9 March 2017.
- ^ a b Zheng, W.; et al. (2014). "Young Galaxy Candidates in the Hubble Frontier Fields. I. Abell 2744" (PDF). The Astrophysical Journal. 795 (1): 93. arXiv:1402.6743. Bibcode:2014ApJ...795...93Z. doi:10.1088/0004-637X/795/1/93. hdl:10261/110433. S2CID 26253419.
- ^ Laporte, N.; Ellis, R. S.; Boone, F.; Bauer, F. E.; Quénard, D.; Roberts-Borsani, G. W.; Pelló, R.; Pérez-Fournon, I.; Streblyanska, A., ApJ, 2017, 837L, 21
- ^ "Ancient Stardust Sheds Light on the First Stars - Most distant object ever observed by ALMA". www.eso.org. Retrieved 9 March 2017.
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