Ancient galaxy most distant object in the Universe
Ancient galaxy most distant object in the Universe by ITN News
Ancient galaxy most distant object in the Universe
Ancient galaxy most distant object in the Universe
| UDFj-39546284 | |
|---|---|
Hubble Space Telescope image of UDFj-39546284 (seen as a reddish spot in the centre of the image)
| |
| Observation data | |
| Constellation | Fornax |
| Right ascension | 03h 32m 39.54s[1] |
| Declination | −27° 46′ 28.4″[1] |
| Redshift | 11.9[2][1] |
| Distance | ~13.42 billion light-years (light travel distance)[2][3] ~32.7(?) billion light-years (present comoving distance)[4] |
| Apparent magnitude (V) | V fainter than 30.1[1] H160 = 28.92 ± 0.18[1] J125 - H160 > 2[1] |
| See also: Galaxy, List of galaxies | |
03h 32m 39.54s, −27° 46′ 28.4″ UDFj-39546284 is the designation given to a stellar structure reported January 27, 2011,[5] as light from the oldest object detected through infrared[6] observation within the Hubble Space Telescope.
The object was identified by G. Illingworth (University of California),
R. Bouwens (University of California and Leiden University) and the
HUDF09 Team during 2009 and 2010 and is in the Fornax constellation.[7][8] It was confirmed by November 2012 to be at Z~10 using Hubble and Spitzer telescope data, including Hubble Extreme Deep Field (XDF).[9] It was reported in December 2012 to be at redshift z = 11.9[2] using Hubble and Spitzer telescope data, including Hubble Ultra-Deep Field (HUDF).[2][9]The actual stellar source of the light detected no longer exists.[10][11] The image is likely to correspond to a compact mini-galaxy[12] of blue stars that existed as we see it 13.42 billion years ago, around "380 million years"[2] after the Big Bang (estimated at 13.8 billion years ago).[13]
At the time of the announcement, it was the oldest galaxy found and exceeded the previous distance record holder by roughly 150 million light years.[14] With the revision of the distance, it again became the oldest galaxy found, as of December 12, 2012.[2] It could remain so until the anticipated launch of the James Webb Space Telescope sometime this decade.
The galaxy has a z (redshift) of 11.9.[2] Unlike UDFy-38135539, UDFj-39546284 has not been spectroscopically confirmed.[15] It was confirmed to be at high redshift in 2012.[9]
A stellar organization first formed during a time thought temporally near to the end period of the Dark Ages,[16] the galaxy is remarkable mainly because it holds significantly expanded information of the early period after the Big Bang.
Gallery
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UDFj-39546284
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UDFj-39546284 appears as a faint red blob
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Location of the Hubble Ultra-Deep Field on the sky
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