A1689B11
A1689B11 is an extremely old spiral galaxy located in the Abell 1689 galaxy cluster in the Virgo constellation.[2] The disk of A1689B11 is cool and thin, yet it produced stars at thirty times the rate of the Milky Way. A1689B11 is 11 billion light years from the Earth, forming 2.6 billion years after the Big Bang. It one of the most distant known spiral galaxies as of 2017.[3][1]
| A1689B11 | |
|---|---|
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 13h 11m 33.336s[1] |
| Declination | −01° 21′ 06.9″[1] |
| Redshift | 2.540[1] |
| Distance | 11 billion light-years (light travel distance) ~20 billion light-years (present proper distance) |
| Characteristics | |
| Type | S[1] |
| Mass | 1010.2 (dynamical)[1] 109.8 ± 0.3 (stellar)[1] M☉ |
| Apparent size (V) | 5200 pc (17 kly) |
| Half-light radius (physical) | 2600 ± 700 pc[1] |
| Other designations | |
| BBC2005 11.1, [BBC2005] Source 11 | |
See also
- BX442, another old and distant spiral galaxy
References
- Tiantian Yuan; Johan Richard; Anshu Gupta; Christoph Federrath; Soniya Sharma; Brent A. Groves; Lisa J. Kewley; Renyue Cen; Yuval Birnboim; David B. Fisher (30 October 2017). "The most ancient spiral galaxy: a 2.6-Gyr-old disk with a tranquil velocity field". The Astrophysical Journal. 850: 61. arXiv:1710.11130. Bibcode:2017ApJ...850...61Y. doi:10.3847/1538-4357/aa951d.
- "[BBC2005] Source 11 -- Galaxy". 24 June 2018.
- "The most ancient spiral galaxy confirmed". PhysOrg. 3 November 2017.
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