Astronomy:NGC 7214

From HandWiki
NGC 7214
HST image of NGC 7214
Observation data (J2000 epoch)
ConstellationPiscis Austrinus
Right ascension 22h 09m 07.66s[1]
Declination−27° 48′ 34.08″[1]
Redshift0.023853[1]
Helio radial velocity7151 ± 4 km/s[1]
Distance346.4 ± 24.3 Mly (106.22 ± 7.44 Mpc)[1]
Group or clusterHickson 91
Apparent magnitude (V)12.5[2]
Characteristics
TypeSB(s)bc pec: Sy1.2[1]
Size~461,000 ly (141.2 kpc) (estimated)[1]
Other designations
2dFGRS S175Z138, 2MASX J22090769-2748340, 6dF J2209076-274834, ESO 467-G012, HCG 091A, IRAS 22062-2803, PGC 68152, LEDA 3222105, RBS 1824[1]

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[1] 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.[3] It is the brightest and largest member of the four galaxies in the Hickson 91 galaxy group known as the NGC 7214 group.[4][5] This galaxy is also classified as an active Seyfert galaxy of type 1 or type 1.2.[6][7]

Description

NGC 7214 is categorized as a late-type face-on spiral galaxy of type SBc.[4][8] The rotation curve for this galaxy is described as both irregular and asymmetric.[4] 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.[9] The nuclear emission region has a compact appearance with a weak H II region that is located in the east.[10]

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.[10][11][12] 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.[8] One of the spiral arms on the southern side is shown to have constant velocity likely caused through streaming motions by the interactions.[13] The central nucleus is surrounded by several H II regions having either moderate or weak signs of star formation.[14]

NGC 7214 taken with Pan-STARRS.

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "NED Search results for NGC 7214". https://ned.ipac.caltech.edu/byname?objname=NGC+7214&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1. 
  2. ↑ "Revised NGC Data for NGC 7214". https://spider.seds.org/ngc/revngcic.cgi?NGC7214. 
  3. ↑ "NGC Objects: NGC 7200 - 7249". https://cseligman.com/text/atlas/ngc72.htm#7214. 
  4. ↑ 4.0 4.1 4.2 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. doi:10.1088/0004-6256/139/1/1. ISSN 0004-6256. https://doi.org/10.1088/0004-6256/139/1/1. 
  5. ↑ Morales, R. J. (1994). "The NGC 7214 galaxy group." (in en). Sky and Telescope 88 (4): 106–107. ISSN 0037-6604. Bibcode: 1994S&T....88d.106M. https://ui.adsabs.harvard.edu/abs/1994S&T....88d.106M/abstract. 
  6. ↑ Condon, J. J.; Yin, Q. F.; Thuan, T. X.; Boller, Th (December 1998). "The ROSAT/IRAS Galaxy Sample Revisited" (in en). The Astronomical Journal 116 (6): 2682–2716. doi:10.1086/300624. ISSN 0004-6256. https://iopscience.iop.org/article/10.1086/300624/pdf. 
  7. ↑ Radovich, M.; Rafanelli, P. (1997). "Spectroscopic analysis of the circumnuclear regions of the Seyfert 1.2 galaxy NGC 7214." (in en). Memorie della Societa Astronomica Italiana 68: 257–258. ISSN 0037-8720. https://articles.adsabs.harvard.edu/pdf/1997MmSAI..68..257R. 
  8. ↑ 8.0 8.1 Eigenthaler, Paul; Ploeckinger, Sylvia; Verdugo, Miguel; Ziegler, Bodo (August 2015). "Star formation properties of Hickson Compact Groups based on deep Hα imaging" (in en). Monthly Notices of the Royal Astronomical Society 451 (3): 2793–2813. doi:10.1093/mnras/stv1037. ISSN 0035-8711. 
  9. ↑ Corwin, H. G.; de Vaucouleurs, A.; de Vaucouleurs, G. (1985). "Southern Galaxy Catalogue." (in en). University of Texas Monographs in Astronomy 4: 1. Bibcode: 1985MAUTx...4....1C. https://ui.adsabs.harvard.edu/abs/1985MAUTx...4....1C/abstract. 
  10. ↑ 10.0 10.1 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. https://iopscience.iop.org/article/10.1086/312951/fulltext/. 
  11. ↑ Ianjamasimanana, R.; Verdes-Montenegro, L.; Sorgho, A.; Hess, K. M.; Jones, M. G.; Cannon, J. M.; Solanes, J. M.; Cluver, M. E. et al. (2025-04-01). "MeerKAT view of Hickson Compact Groups - I. Data description and release" (in en). Astronomy & Astrophysics 696: A176. doi:10.1051/0004-6361/202453005. ISSN 0004-6361. https://www.aanda.org/articles/aa/abs/2025/04/aa53005-24/aa53005-24.html. 
  12. ↑ Sorgho, A.; Verdes-Montenegro, L.; Ianjamasimanana, R.; Hess, K. M.; Jones, M. G.; Korsaga, M.; Wang, J.; Lin, X. et al. (2025-04-01). "MeerKAT view of Hickson Compact Groups - II. HI deficiency in the cores and surrounding regions" (in en). Astronomy & Astrophysics 696: A177. doi:10.1051/0004-6361/202452995. ISSN 0004-6361. https://www.aanda.org/articles/aa/abs/2025/04/aa52995-24/aa52995-24.html. 
  13. ↑ Amram, P.; Plana, H.; Balkowski, C.; Boulesteix, J. (2003-05-01). "Gas kinematics of a sample of five Hickson Compact Groups - The data" (in en). Astronomy & Astrophysics 402 (3): 865–877. doi:10.1051/0004-6361:20030034. ISSN 0004-6361. https://www.aanda.org/articles/aa/pdf/2003/18/aa3171.pdf. 
  14. ↑ Radovich, Mario; Rafanelli, Piero; Barbon, Roberto (June 1998). "Spectroscopy of the circumnuclear emission line regions in Seyfert galaxies. II. NGC 7214" (in en). Astronomy and Astrophysics 334: 124–138. ISSN 0004-6361. https://articles.adsabs.harvard.edu/pdf/1998A%26A...334..124R. 



Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:NGC_7214&oldid=4343022"