Most Distant Quasars
| Quasar | Distance | Notes | |
|---|---|---|---|
| ULAS J1120+0641 (ULAS J112001.48+064124.3) |
z=7.085 | Most distant quasar. First quasar with redshift over 7. | |
| CFHQS J2329-0301 (CFHQS J232908-030158) |
z=6.43 | Former most distant quasar | |
| SDSS J114816.64+525150.3 (SDSS J1148+5251) |
z=6.419 | Former most distant quasar | |
| SDSS J1030+0524 (SDSSp J103027.10+052455.0) |
z=6.28 | Former most distant quasar. First quasar with redshift over 6. | |
| SDSS J104845.05+463718.3 (QSO J1048+4637) |
z=6.23 | ||
| SDSS J162331.81+311200.5 (QSO J1623+3112) |
z=6.22 | ||
| CFHQS J0033-0125 (CFHQS J003311-012524) |
z=6.13 | ||
| SDSS J125051.93+313021.9 (QSO J1250+3130) |
z=6.13 | ||
| CFHQS J1509-1749 (CFHQS J150941-174926) |
z=6.12 | ||
| QSO B1425+3326 / QSO J1427+3312 | z=6.12 | Most distant radio-quasar | |
| SDSS J160253.98+422824.9 (QSO J1602+4228) |
z=6.07 | ||
| SDSS J163033.90+401209.6 (QSO J1630+4012) |
z=6.05 | ||
| CFHQS J1641+3755 (CFHQS J164121+375520) |
z=6.04 | ||
| SDSS J113717.73+354956.9 (QSO J1137+3549) |
z=6.01 | ||
| SDSS J081827.40+172251.8 (QSO J0818+1722) |
z=6.00 | For reference | |
| SDSSp J130608.26+035626.3 (QSO J1306+0356) |
z=5.99 | For reference | |
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| Type | Quasar | Date | Distance | Notes |
|---|---|---|---|---|
| Absolute most distant quasar | ULAS J1120+0641 | 2011 | z=7.085 | |
| Most distant radio loud quasar | QSO B1425+3326 / QSO J1427+3312 | 2008 | z=6.12 | |
| Most distant radio quiet quasar | z= | |||
| Most distant OVV quasar | z= | |||
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| Quasar | Date | Distance | Notes |
|---|---|---|---|
| ULAS J1120+0641 (ULAS J112001.48+064124.3) |
2011 - | z=7.085 | This was not the most distant object when discovered. This was the first quasar found beyond redshift 7. |
| CFHQS J2329-0301 (CFHQS J232908-030158) |
2007 − 2011 | z=6.43 | This was not the most distant object when discovered. It did not exceed IOK-1 (z=6.96), which was discovered in 2006. |
| SDSS J114816.64+525150.3 (SDSS J1148+5251) |
2003 − 2007 | z=6.419 | This was not the most distant object when discovered. It did not exceed HCM 6A galaxy lensed by Abell 370 at z=6.56, discovered in 2002. Also discovered around the time of discovery was a new most distant galaxy, SDF J132418.3+271455 at z=6.58. |
| SDSS J1030+0524 (SDSSp J103027.10+052455.0) |
2001 − 2003 | z=6.28 | This was the most distant object when discovered. This was the first object beyond redshift 6 when discovered. |
| SDSS 1044-0125 (SDSSp J104433.04-012502.2) |
2000 − 2001 | z=5.82 | This was the most distant object discovered at the time of discovery. It exceeded galaxy SSA22-HCM1 (z=5.74) as the most distant object (discovered 1999). |
| RD300 (RD J030117+002025) |
2000 | z=5.50 | MB=-22.7 This was not the most distant object discovered at time of discovery. It did not surpass galaxy SSA22-HCM1 (z=5.74) (discovered 1999). |
| SDSSp J120441.73−002149.6 (SDSS J1204-0021) |
2000 | z=5.03 | This was not the most distant object discovered at time of discovery. It did not surpass galaxy SSA22-HCM1 (z=5.74) (discovered 1999). |
| SDSSp J033829.31+002156.3 (QSO J0338+0021) |
1998 − 2000 | z=5.00 | This was the first quasar discovered breaking redshift 5. This was not the most distant object discovered at time of discovery. It did not exceed the galaxy BR1202-0725 LAE at z=5.64 discovered earlier in 1998. |
| PC 1247+3406 | 1991 − 1998 | z=4.897 | This was the most distant object discovered at time of discovery. |
| PC 1158+4635 | 1989 − 1991 | z=4.73 | This was the most distant object discovered at the time of discovery. |
| Q0051-279 | 1987 − 1989 | z=4.43 | This was the most distant object discovered at the time of discovery. |
| Q0000-26 (QSO B0000-26) |
1987 | z=4.11 | This was the most distant object discovered at the time of discovery. |
| PC 0910+5625 (QSO B0910+5625) |
1987 | z=4.04 | This was the most distant object discovered at the time of discovery. This was the second quasar discovered with a redshift over 4. |
| Q0046–293 (QSO J0048-2903) |
1987 | z=4.01 | First quasar discovered with a redshift over 4. This was the most distant object discovered at the time of discovery. |
| Q1208+1011 (QSO B1208+1011) |
1986 − 1987 | z=3.80 | This was the most distant object discovered at the time of discovery. This is also a gravitationally-lensed double-image quasar, and at the time of discovery to 1991, had the least angular separation between images, 0.45 ″. |
| PKS 2000-330 (QSO J2003-3251, Q2000-330) |
1982 − 1986 | z=3.78 | This was the most distant object discovered at the time of discovery. |
| OQ172 (QSO B1442+101) |
1974 − 1982 | z=3.53 | This was the most distant object discovered at the time of discovery. |
| OH471 (QSO B0642+449) |
1973 − 1974 | z=3.408 | First quasar discovered with a redshift greater than 3. Nickname was "the blaze marking the edge of the universe". This was the most distant object discovered at the time of discovery. |
| 4C 05.34 | 1970 − 1973 | z=2.877 | This was the most distant object discovered at the time of discovery. Its redshift was so much greater than the previous record that it was believed to be erroneous, or spurious. |
| 5C 02.56 (7C 105517.75+495540.95) |
1968 − 1970 | z=2.399 | This was the most distant object when discovered. |
| 4C 25.05 (4C 25.5) |
1968 | z=2.358 | This was the most distant object when discovered. |
| PKS 0237-23 (QSO B0237-2321) |
1967 − 1968 | z=2.225 | This was the most distant object discovered at the time of discovery. |
| 4C 12.39 (Q1116+12, PKS 1116+12) |
1966 − 1967 | z=2.1291 | This was the most distant object when discovered. |
| 4C 01.02 (Q0106+01, PKS 0106+1) |
1965 − 1966 | z=2.0990 | This was the most distant object when it was discovered. |
| 3C 9 | 1965 | z=2.018 | This was the most distant object discovered at the time of discovery. This was the first quasar with a redshift in excess of 2. |
| 3C 147 | 1964 − 1965 | z=0.545 | This was the first quasar to become the most distant object in the universe, beating radio galaxy 3C 295. |
| 3C 48 | 1963 − 1964 | z=0.367 | Redshift was discovered after publication of 3C273's results prompted researchers to re-examine spectroscopic data. This was the second quasar redshift measured. This not the most distant object discovered at the time of discovery. The radio galaxy 3C 295 was found in 1960 to be at z=0.461 |
| 3C 273 | 1963 | z=0.158 | First redshift identified for a quasar. This not the most distant object discovered at the time of discovery. The radio galaxy 3C 295 was found in 1960 to be at z=0.461 |
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The first time that quasars became the most distant object in the universe was in 1964. Quasars would remain the most distant objects in the universe until 1997, when a pair of non-quasar galaxies would take the title. ( galaxies CL 1358+62 G1 & CL 1358+62 G2 - lensed by galaxy cluster CL 1358+62 )
Read more about this topic: List Of Quasars
Famous quotes containing the word distant:
“Till, in a distant town,
Towns on from mine—
I sat me down;
This was a dream.”
—Emily Dickinson (1830–1886)