NGC 7214

NGC 7214
HST image of NGC 7214
Observation data (J2000 epoch)
ConstellationPiscis Austrinus
Right ascension22h 09m 07.66s
Declination−27° 48′ 34.08″
Redshift0.023853
Heliocentric radial velocity7151 ± 4 km/s
Distance346.4 ± 24.3 Mly (106.22 ± 7.44 Mpc)
Group or clusterHickson 91
Apparent magnitude (V)12.5
Characteristics
TypeSB(s)bc pec: Sy1.2
Size~461,000 ly (141.2 kpc) (estimated)
Other designations
2dFGRS S175Z138, 2MASX J22090769-2748340, 6dF J2209076-274834, ESO 467-G012, HCG 091A, IRAS 22062-2803, PGC 68152, LEDA 3222105, RBS 1824

NGC 7214 is a large barred spiral galaxy located in the southern constellation of Piscis Austrinus. The redshift of the galaxy is (z) 0.023 and it was first discovered by the British astronomer John Herschel in July 1834, who described the object as a possible globular cluster with an irregular center. It is the brightest and largest member of the four galaxies in the Hickson 91 galaxy group known as the NGC 7214 group. This galaxy is also classified as an active Seyfert galaxy of type 1 or type 1.2.

Description

NGC 7214 is categorized as a late-type face-on spiral galaxy of type SBc. The rotation curve for this galaxy is described as both irregular and asymmetric. The central nucleus has a bright appearance, with spiral arms that are also bright on the inner side and much fainter outer spiral arms that are extended. The nuclear emission region has a compact appearance with a weak H II region that is located in the east.

NGC 7214 is undergoing an interaction with a smaller spiral galaxy companion (HCG 91c), given the presence of a large prominent tidal tail extending from it. The tail structure has two components that point towards the northeast. The tail also contains star forming regions, given the traces of Hydrogen-alpha knots. One of the spiral arms on the southern side is shown to have constant velocity likely caused through streaming motions by the interactions. The central nucleus is surrounded by several H II regions having either moderate or weak signs of star formation.

NGC 7214 taken with Pan-STARRS.

References

  1. 1 2 3 4 5 6 7 8 9 "NED Search results for NGC 7214". NASA/IPAC Extragalactic Database. Retrieved 2026-03-12.
  2. ↑ "Revised NGC Data for NGC 7214". spider.seds.org. Retrieved 30 March 2024.
  3. ↑ "NGC Objects: NGC 7200 - 7249". cseligman.com. Retrieved 2026-03-12.
  4. 1 2 3 Plana, H.; Amram, P.; de Oliveira, C. Mendes; Balkowski, C. (2009-11-18). "Mass Distribution in Hickson Compact Groups of Galaxies". The Astronomical Journal. 139 (1): 1–16. arXiv:0909.3936. doi:10.1088/0004-6256/139/1/1. ISSN 0004-6256.
  5. ↑ Morales, R. J. (1994). "The NGC 7214 galaxy group". Sky and Telescope. 88 (4): 106–107. Bibcode:1994S&T....88d.106M. ISSN 0037-6604.
  6. ↑ Condon, J. J.; Yin, Q. F.; Thuan, T. X.; Boller, Th (December 1998). "The ROSAT/IRAS Galaxy Sample Revisited". The Astronomical Journal. 116 (6): 2682–2716. doi:10.1086/300624. ISSN 0004-6256.
  7. ↑ Radovich, M.; Rafanelli, P. (1997). "Spectroscopic analysis of the circumnuclear regions of the Seyfert 1.2 galaxy NGC 7214". Memorie della Societa Astronomica Italiana. 68: 257–258. ISSN 0037-8720.
  8. 1 2 Eigenthaler, Paul; Ploeckinger, Sylvia; Verdugo, Miguel; Ziegler, Bodo (August 2015). "Star formation properties of Hickson Compact Groups based on deep Hα imaging". Monthly Notices of the Royal Astronomical Society. 451 (3): 2793–2813. arXiv:1505.01502. doi:10.1093/mnras/stv1037. ISSN 0035-8711.
  9. ↑ Corwin, H. G.; de Vaucouleurs, A.; de Vaucouleurs, G. (1985). "Southern Galaxy Catalogue". University of Texas Monographs in Astronomy. 4: 1. Bibcode:1985MAUTx...4....1C.
  10. 1 2 Gonzalez Delgado, Rosa M.; Perez, Enrique; Tadhunter, Clive; Vilchez, Jose M.; Rodriguez-Espinosa, Jose Miguel (January 1997). "H ii Region Population in a Sample of Nearby Galaxies with Nuclear Activity. I. Data and General Results". The Astrophysical Journal Supplement Series. 108 (1): 155–198. doi:10.1086/312951. ISSN 0067-0049.
  11. ↑ Ianjamasimanana, R.; Verdes-Montenegro, L.; Sorgho, A.; Hess, K. M.; Jones, M. G.; Cannon, J. M.; Solanes, J. M.; Cluver, M. E.; Moldón, J.; Namumba, B.; Román, J.; Labadie-García, I.; Casa, C. C. de la; Borthakur, S.; Wang, J. (2025-04-01). "MeerKAT view of Hickson Compact Groups - I. Data description and release". Astronomy & Astrophysics. 696: A176. doi:10.1051/0004-6361/202453005. ISSN 0004-6361.
  12. ↑ Sorgho, A.; Verdes-Montenegro, L.; Ianjamasimanana, R.; Hess, K. M.; Jones, M. G.; Korsaga, M.; Wang, J.; Lin, X.; Solanes, J. M.; Cluver, M. E.; Cannon, J. M.; Bosma, A.; Athanassoula, E.; Olmo, A. del; Perea, J. (2025-04-01). "MeerKAT view of Hickson Compact Groups - II. HI deficiency in the cores and surrounding regions". Astronomy & Astrophysics. 696: A177. doi:10.1051/0004-6361/202452995. ISSN 0004-6361.
  13. ↑ Amram, P.; Plana, H.; Balkowski, C.; Boulesteix, J. (2003-05-01). "Gas kinematics of a sample of five Hickson Compact Groups - The data" (PDF). Astronomy & Astrophysics. 402 (3): 865–877. doi:10.1051/0004-6361:20030034. ISSN 0004-6361.
  14. ↑ Radovich, Mario; Rafanelli, Piero; Barbon, Roberto (June 1998). "Spectroscopy of the circumnuclear emission line regions in Seyfert galaxies. II. NGC 7214". Astronomy and Astrophysics. 334: 124–138. ISSN 0004-6361.