French
DeutschNGC 1023 Group
| NGC 1023 Group | |
|---|---|
| Observation data (Epoch ) | |
| Brightest member | NGC 1023 |
| Number of galaxies | ~23 plus 42 candidate members[1][2] |
| Distance | 20.6 Mly (6.3 Mpc) |
The NGC 1023 Group is a group of galaxies about 20.6 million light-years (6.3 Mpc) away from Earth. It is a group in the Local Supercluster, along with the Local Group.[3]
Members
[edit]| Name | Type | Magnitude |
|---|---|---|
| NGC 1023 | SB(rs)0 | 10.65 |
| NGC 925 | SAB(s)d | 10.96 |
| NGC 959 | Sdm: | 12.38 |
| NGC 891 | SA(s)b | 11.24 |
| NGC 1239 | SAB(rs)cd | 12.14 |
| NGC 1058 | SA(rs)c | 12.26 |
| NGC 1003 | SAcd | 12.1 |
| NGC 949 | SA(rs)b? | 11.8 |
| NGC 959 | Sdm? | 12.4 |
| IC 239 | SAB(rs)cd | 11.1 |
| UGC 2034 | Im | 13.1 |
| UGC 2023 | Im? | 13.0 |
| UGC 2165 | dE,N | 13.7 |
| UGC 2126 | SABdm? | 13.98 |
| UGC 2157 | Sdm? | 13.99 |
| NGC 1023A | IB? | 12.7 |
| UGC 2014 | Im? | 14.5 |
| UGC 1865 | Sm? | 14.42 |
| NGC 1023C | dE/I | 16.31 |
| NGC 1023B | dI | 16.35 |
| NGC 1023D | dE/I | 16.51 |
| GALEXASC J024016.48+373731.1 | dE,N | 16.66 |
| NGC 1023 GROUP:[TT2009] 42 | dE | 19.25 |
- Probable (dwarfs): DDO 024, DDO 025.
- Possible members: NGC 672, IC 1727, NGC 1156(?).
- Possible (dwarfs): DDO 011, DDO 017, DDO 019, DDO 022, DDO 026.
Map
[edit]The location of the NGC 1023 group within the Virgo supercluster (as part of the Laniakea supercluster) can be found near the center of this diagram - below the blue "Local Group" mark.
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References
[edit]- ^ Trentham, Neil; Tully, R. Brent (2009). "Dwarf galaxies in the NGC 1023 Group". Monthly Notices of the Royal Astronomical Society. 392 (2): 722–734. arXiv:0906.2540. Bibcode:2009MNRAS.398..722T. doi:10.1111/j.1365-2966.2009.15189.x. S2CID 18442520.
- ^ "NGC 1023 Group". Astronomy Sketch of the Day. March 2014. Retrieved 2020-09-11.
- ^ "The Universe within 100 million Light Years - the Virgo Supercluster". Atlas of the Universe.
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