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  • 21 Aug, 2019

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NGC 7590
NGC 7590 is a spiral galaxy in the constellation Grus. This galaxy is in the upper middle west part of the Virgo Supercluster. Its velocity with respect to the cosmic microwave background is 1333 ± 18 km/s, which corresponds to a Hubble distance of 64.1 ± 4.6 Mly (19.66 ± 1.40 Mpc). However, 12 non-redshift measurements give a distance of 84.50 ± 3.99 Mly (25.908 ± 1.222 Mpc). NGC 7590 was discovered by Scottish astronomer James Dunlop on 14 July 1826.

The SIMBAD database lists NGC 7590 as a Seyfert I Galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable. While the neighboring NGC 7599 is marginally brighter, NGC 7590 is easier to identify due to its bright Seyfert core and an adjacent star of 13th magnitude.

Galaxy groups

According to A. M. Garcia, NGC 7590 is a member of the NGC 7582 group (also known as LGG 472). This group of galaxies contains at least 9 members. The other galaxies are NGC 7496, NGC 7531, NGC 7552, NGC 7582, NGC 7599, NGC 7632, IC 5325, and ESO 291-24.

NGC 7590 also belongs a group known as the Grus quartet. Other members of the group include the spiral galaxies NGC 7552, NGC 7582, and NGC 7599. A large tidal extension of HI reaches from NGC 7582 to NGC 7552, which is indicative of interactions between the group members, yet NGC 7552 does not have highly disturbed morphology.

See also

References

  1. ^ "NASA/IPAC Extragalactic Database". Results for NGC 7590. Retrieved January 7, 2017.
  2. ^ "Distance Results for NGC 7590". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 21 November 2024.
  3. ^ Courtney Seligman. "Celestial Atlas Table of Contents, NGC 7550 - 7599"..
  4. ^ "NGC 7590". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 November 2024.
  5. ^ O'Meara 2013, p. 428.
  6. ^ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
  7. ^ Freeland, E.; Stilp, A.; Wilcots, E. (1 July 2009). "H I Observations of Five Groups of Galaxies". The Astronomical Journal. 138 (1): 295–304. arXiv:0905.3907. Bibcode:2009AJ....138..295F. doi:10.1088/0004-6256/138/1/295. S2CID 15714969.
  8. ^ Wood, Corey M.; Tremonti, Christy A.; Calzetti, Daniela; Leitherer, Claus; Chisholm, John; Gallagher, John S. (25 July 2015). "Supernova-driven outflows in NGC 7552: a comparison of H α and UV tracers". Monthly Notices of the Royal Astronomical Society. 452 (3): 2712–2730. arXiv:1507.00346. Bibcode:2015MNRAS.452.2712W. doi:10.1093/mnras/stv1471. S2CID 118422451.

Sources

  • Media related to NGC 7590 at Wikimedia Commons
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