Eridanus cluster of galaxies
The Eridanus galaxy cluster (also Fornax II galaxy cluster ) is a collection of galaxies , which is located at a distance of about 85 million light years on the border of the constellation Eridanus to the constellation Chemical Furnace (Fornax). After the Virgo galaxy cluster and the Fornax galaxy cluster , the Eridanus galaxy cluster is the third closest galaxy cluster to us . Like the other two named, the Eridanus Cluster also belongs to the Virgo supercluster . It contains about 70 brighter galaxies that are spread over an area of about 10 ° in the sky. The cluster forms the Eridanus supergroup with the Fornax cluster, the Dorado group and a few smaller galaxy groups. Recent research indicates that this is a still developing larger galaxy cluster that will contain a total of up to 10 14 solar masses .
The list below shows the 33 brightest members.
- Column 1: Name of the galaxy.
- Column 2: Right ascension of epoch 2000.
- Column 3: Declination of epoch 2000.
- Column 4: Apparent brightness (B-band) in magnitudes.
- Column 5: morphological galaxy type .
- Column 6: Apparent diameter in minutes of arc.
- Column 7: diameter in 1000 light years (kLj).
- Column 8: Radial speed (km / s) of the galaxy relative to the cosmic background radiation.
| Surname | α | δ | m B | Type | Size (′) | Size (kLj) | v r (km / s) |
|---|---|---|---|---|---|---|---|
| NGC 1232 | 03 09.8 | −20 35 | 10.7 | SBc | 6.9 | 170 | 1517 |
| IC 1898 | 03 10.3 | −22 24 | 13.7 | SBc | 3.4 | 85 | 1164 |
| NGC 1258 | 03 14.1 | −21 46 | 13.9 | SBc | 1.3 | 30th | 1340 |
| NGC 1297 | 03 19.2 | −19 06 | 13.5 | E. | 2.0 | 50 | 1395 |
| NGC 1300 | 03 19.7 | −19 25 | 11.2 | SBbc | 6.0 | 150 | 1421 |
| NGC 1325 | 03 24.4 | −21 33 | 12.3 | SBbc | 4.7 | 115 | 1446 |
| NGC 1325A | 03 24.8 | −21 20 | 13.6 | SBcd | 1.8 | 45 | 1188 |
| NGC 1332 | 03 26.3 | −21 20 | 11.4 | E. | 4.2 | 105 | 1383 |
| NGC 1347 | 03 29.7 | −22 17 | 13.9 | SBc | 1.4 | 35 | 1624 |
| NGC 1353 | 03 32.1 | −20 49 | 12.4 | SBb | 3.5 | 85 | 1390 |
| IC 1952 | 03 33.4 | −23 43 | 13.5 | SBbc | 2.5 | 60 | 1683 |
| IC 1953 | 03 33.7 | −21 29 | 12.7 | SBc | 2.6 | 65 | 1733 |
| NGC 1359 | 03 33.8 | −19 29 | 13.0 | SBm | 2.1 | 55 | 1833 |
| NGC 1371 | 03 35.0 | −24 56 | 11.6 | SBa | 5.6 | 140 | 1344 |
| NGC 1370 | 03 35.2 | −20 22 | 13.9 | E. | 1.5 | 35 | 933 |
| NGC 1377 | 03 36.7 | −20 54 | 13.8 | S0 | 1.7 | 45 | 1645 |
| NGC 1385 | 03 37.5 | −24 30 | 11.5 | SBc | 3.7 | 90 | 1373 |
| NGC 1383 | 03 37.7 | −18 20 | 13.8 | S0 | 1.7 | 40 | 1828 |
| NGC 1395 | 03 38.5 | −23 02 | 10.7 | E. | 5.6 | 140 | 1577 |
| NGC 1398 | 03 38.9 | −26 20 | 10.5 | SBab | 7.1 | 175 | 1289 |
| NGC 1401 | 03 39.4 | −22 43 | 13.7 | S0 | 1.9 | 50 | 1406 |
| NGC 1400 | 03 39.5 | −18 41 | 12.3 | E. | 2.3 | 60 | 415 |
| NGC 1407 | 03 40.2 | −18 35 | 10.9 | E. | 5.1 | 125 | 1650 |
| NGC 1415 | 03 40.9 | −22 34 | 12.8 | Sat | 3.3 | 80 | 1451 |
| IC 346 | 03 41.7 | −18 16 | 13.9 | S0 | 1.9 | 45 | 1830 |
| NGC 1426 | 03 42.8 | −22 06 | 12.7 | E. | 2.5 | 60 | 1296 |
| NGC 1439 | 03 44.8 | −21 55 | 12.4 | E. | 2.6 | 65 | 1577 |
| NGC 1440 | 03 45.0 | −18 16 | 12.9 | S0 | 2.2 | 55 | 1403 |
| NGC 1438 | 03 45.3 | −23 00 | 13.3 | SBa | 2.0 | 50 | 1438 |
| NGC 1452 | 03 45.4 | −18 38 | 12.9 | Sat | 2.3 | 60 | 1619 |
| ESO 549-18 | 03 48.2 | −21 28 | 13.3 | SBc | 2.5 | 60 | 1473 |
| ESO 482-46 | 03 49.7 | −27 00 | 13.7 | Sc | 3.5 | 90 | 1422 |
| NGC 1482 | 03 54.6 | −20 30 | 13.3 | S0 | 2.2 | 55 | 1753 |
Individual evidence
- ↑ a b atlasoftheuniverse.com
- ↑ CNA Willmer et al .: Studies of nearby poor clusters - The Eridanus group . In: Astronomical Journal . tape 98 , November, 1989, pp. 1531–1541 , doi : 10.1086 / 115236 , bibcode : 1989AJ ..... 98.1531W .
- ^ S. Brough et al .: Eridanus - A Supergroup in the Local Universe? In: Monthly Notices of the Royal Astronomical Society . tape 369 , 2006, pp. 1351–1374 , doi : 10.1111 / j.1365-2966.2006.10387.x , arxiv : astro-ph / 0603778 , bibcode : 2006MNRAS.369.1351B .