UDFj-39546284
Coordinates: 
03h 32m 39.54s, −27° 46′ 28.4″
03h 32m 39.54s, −27° 46′ 28.4″| UDFj-39546284 | |
|---|---|
 Hubble Space Telescope image of UDFj-39546284 (seen as a reddish spot in the center of the image) | |
| Observation data (J2000 epoch) | |
| Constellation | Fornax |
| Right ascension | 03h 32m 39.54s[1] |
| Declination | −27° 46′ 28.5″[1] |
| Redshift | 11.58+0.05 −0.05[2] [3][4] |
| Apparent magnitude (V) | V fainter than 30.1[5] H160 = 28.92 ± 0.18[5] J125 – H160 > 2[5] |
| Other designations | |
| [MDB2013] UDF12-3954-6285, JADES-GS-z11-0 | |
UDFj-39546284 is a high-redshift Lyman-break galaxy discovered by the Hubble Space Telescope in infrared Hubble Ultra-Deep Field (HUDF) observations in 2009. The object, located in the Fornax constellation, was identified by G. Illingworth (UC Santa Cruz), R. Bouwens (UC Santa Cruz and Leiden University) and the HUDF09 Team during 2009 and 2010.[6][7] It was reported with a redshift of z~10 using Hubble and Spitzer Space Telescope photometric data,[3] with later reports in 2012 suggesting a possibly higher redshift of z = 11.9[8][3] Although doubts were raised that this galaxy could instead be a low-redshift interloper with extreme spectral
emission lines producing the appearance of a very high redshift source,[4][3] later spectroscopic observations by the James Webb Space Telescope's NIRSpec instrument in 2022 confirmed the galaxy's high redshift to a spectroscopically confirmed estimate of z = 11.58.[2]
Gallery
-
UDFj-39546284 -
UDFj-39546284 appears as a faint red blob
See also
- EGSY8p7
- Hubble Ultra-Deep Field
- List of the most distant astronomical objects
- MACS0647-JD
- Reionization
- UDFy-38135539
References
- ^ a b "[MDB2013] UDF12-3954-6284". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-13.
- ^ S2CID 257968812.
- ^ .
- ^ S2CID 119226564.
- ^ S2CID 4425674.
- ^ Staff (January 28, 2011). "Most Distant Galaxy Candidate Ever Seen in Universe". NASA. Retrieved December 13, 2012.
- ^ Staff. "Picture Album: Gray-scale Image of Object UDFj-39546284 from HUDF WFC3/IR". Space Telescope Science Institute. Retrieved December 13, 2012.
- ^ Wall, Mike (December 12, 2012). "Ancient Galaxy May Be Most Distant Ever Seen". Space.com. Retrieved December 12, 2012.
External links
Wikimedia Commons has media related to UDFj-39546284.
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