NGC 6789

NGC 6789
Hubble Space Telescope image of NGC 6789
Observation data (J2000 epoch)
ConstellationDraco
Right ascension19h 16m 41s
Declination+63° 58′ 23″
Redshift−0.000470
Heliocentric radial velocity−141 ± 9 km/s
Distance12 Mly (3.6 Mpc)
Apparent magnitude (B)13.76
Characteristics
TypeIm
Other designations
NGC 6789,MCG+11-23-001, LEDA 63000

NGC 6789 is a void irregular galaxy in the constellation Draco. It was discovered by Lewis Swift on August 30, 1883. It is located within the Local Void, a region of space with far fewer galaxies than its surroundings.

NGC 6789 is the nearest blue compact dwarf (BCD) galaxy to the Milky Way. It is chemically homogeneous and relatively metal-poor.

NGC 6789 has attracted attention because it shows recent central star formation despite its extreme isolation.

See also

References

  1. 1 2 3 4 "NGC 6789". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 19 June 2019.
  2. 1 2 3 "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 19 June 2019.
  3. 1 2 García-Benito, R.; Pérez-Montero, E. (2012). "Auto-consistent metallicity and star formation history of the nearest blue compact dwarf galaxy NGC 6789". Monthly Notices of the Royal Astronomical Society. 423 (1): 406–421. arXiv:1203.2186. Bibcode:2012MNRAS.423..406G. doi:10.1111/j.1365-2966.2012.20885.x. S2CID 119163529.
  4. 1 2 Lelli, Federico; Verheijen, Marc; Fraternali, Filippo (2014). "The triggering of starbursts in low-mass galaxies". Monthly Notices of the Royal Astronomical Society. 445 (2): 1694–1712. arXiv:1409.1239. Bibcode:2014MNRAS.445.1694L. doi:10.1093/mnras/stu1804.
  5. ↑ Seligman, Courtney. "New General Catalog Objects: NGC 6750 - 6799". New General Catalog Objects: NGC 6750 - 6799. Retrieved 19 June 2019.
  6. ↑ Trujillo, Ignacio; Guerra Arencibia, Sergio; Ruiz Cejudo, Ignacio; Montes, Mireia; Alarcon, Miguel R.; Serra-Ricart, Miquel (2025). "Deep Imaging of the Very Isolated Dwarf Galaxy NGC 6789". Research Notes of the AAS. 9 (11): 303. arXiv:2511.07041. Bibcode:2025RNAAS...9..303T. doi:10.3847/2515-5172/ae1cbe.