9io9

9io9
ALMA image of 9io9, showing the magnetic field in the 11 billion light years distant galaxy.
Observation data (J2000 epoch)
ConstellationCetus
Right ascension02h 09m 41.27s[1]
Declination+00° 15′ 58.48″[1]
Redshift0.206 (lensing galaxy) [2]
2.554±0.0002 (lensed galaxy)[3]
Distance2.5 and 11.1 Gly (770 and 3,400 Mpc)[4]
Other designations
G1, G2, HerS J020941.1+001557, HERS1, PJ020941.3
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ASW0009io9 (9io9) is a gravitationally lensed system of two galaxies. The nearer galaxy is approximately 2 billion light-years (610 Mpc) from Earth and is designated SDSS J020941.27+001558.4, while the lensed galaxy is 10 billion light-years (3.1 Gpc) distant and is designated ASW0009io9 (shortened to 9io9).[5][2] It was discovered in January 2014 by a group of citizen scientists, while classifying images on the website Spacewarps.org.[5] The discovery was announced on the BBC television programme Stargazing Live.[5][2]

  1. ^ a b Cite error: The named reference ssds was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Geach2015 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Geach2018 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference NED cosmology was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference zooniverse20140117 was invoked but never defined (see the help page).