Astronomy:UDFj-39546284

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Short description: High red-shift structure in the constellation Fornax

Coordinates: Sky map 03h 32m 39.54s, −27° 46′ 28.4″

UDFj-39546284
UDFj-39546284-hs-2011-05-c.jpg
Hubble Space Telescope image of UDFj-39546284 (seen as a reddish spot in the center of the image)
Observation data (J2000 epoch)
ConstellationFornax
Right ascension 03h 32m 39.54s[1]
Declination−27° 46′ 28.5″[1]
Redshift11.58+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

References

  1. ↑ 1.0 1.1 "[MDB2013 UDF12-3954-6284"]. SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%5BMDB2013%5D+UDF12-3954-6284. 
  2. ↑ 2.0 2.1 Robertson, B. E. (2023). "Identification and properties of intense star-forming galaxies at redshifts z > 10". Nature Astronomy 7 (5): 611–621. doi:10.1038/s41550-023-01921-1. 
  3. ↑ 3.0 3.1 3.2 3.3 Bouwens, R. J.; Oesch, P. A.; Illingworth, G. D.; Labbé, I.; Van Dokkum, P. G.; Brammer, G.; Magee, D.; Spitler, L. R. et al. (2013). "Photometric Constraints on the Redshift of z ~ 10 Candidate UDFj-39546284 from Deeper WFC3/IR+ACS+IRAC Observations over the HUDF". The Astrophysical Journal Letters 765 (1): L16. doi:10.1088/2041-8205/765/1/L16. Bibcode: 2013ApJ...765L..16B. 
  4. ↑ 4.0 4.1 Brammer, Gabriel B.; Van Dokkum, Pieter G.; Illingworth, Garth D.; Bouwens, Rychard J.; Labbé, Ivo; Franx, Marijn; Momcheva, Ivelina; Oesch, Pascal A. (2013). "A Tentative Detection of an Emission Line at 1.6 μm for the z ~ 12 Candidate UDFj-39546284". The Astrophysical Journal Letters 765 (1): L2. doi:10.1088/2041-8205/765/1/L2. Bibcode: 2013ApJ...765L...2B. 
  5. ↑ 5.0 5.1 5.2 "A candidate redshift z ~ 10 galaxy and rapid changes in that population at an age of 500 Myr". Nature 469 (7331): 504–507. 2011. doi:10.1038/nature09717. PMID 21270889. Bibcode: 2011Natur.469..504B. 
  6. ↑ Staff (January 28, 2011). "Most Distant Galaxy Candidate Ever Seen in Universe". NASA. http://www.nasa.gov/mission_pages/hubble/science/ancient-object-gallery.html. 
  7. ↑ Staff. "Picture Album: Gray-scale Image of Object UDFj-39546284 from HUDF WFC3/IR". Space Telescope Science Institute. http://hubblesite.org/gallery/album/entire/pr2011005d/. 
  8. ↑ Wall, Mike (December 12, 2012). "Ancient Galaxy May Be Most Distant Ever Seen". Space.com. http://www.space.com/18879-hubble-most-distant-galaxy.html. 

External links

Preceded by
UDFy-38135539 		Most distant astronomical object known
2011 — 2012 		Succeeded by
MACS0647-JD
Preceded by
MACS0647-JD 		Most distant astronomical object known
2012 		Succeeded by
BDF-3299
Preceded by
UDFy-38135539 		Most distant galaxy known
2011 — 2012 		Succeeded by
MACS0647-JD
Preceded by
MACS0647-JD 		Most distant galaxy known
2012 		Succeeded by
BDF-3299



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