NGC 4221

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NGC 4221
NGC4221 - SDSS DR14.jpg
SDSS image of NGC 4221
Observation data (J2000 epoch)
Constellation Draco
Right ascension 12h 15m 59.860s [1]
Declination +66° 13′ 50.90″ [1]
Redshift 0.00439 [2]
Heliocentric radial velocity 1313 ± 3 km/s [2]
Distance 75.9  Mly (23.28  Mpc) [3]
Group or cluster NGC 4256 Group [4]
Apparent magnitude  (B)13.6 [2]
Characteristics
Type (R)SB0+(r) [1]
Size55,900  ly (17.15  kpc) (estimated) [1]
Apparent size  (V)1.347′ × 0.943′ [2]
Other designations
UGC 7288, MCG +11-15-040, PGC 39266 [2]

NGC 4221 is a barred lenticular galaxy located about 75.9 million light-years (23.28 megaparsecs) away [3] in the constellation of Draco. It was discovered on April 3, 1832, by the astronomer John Herschel. [5] NGC 4221 is notable for having an outer ring [6] that surrounds the inner barred central region of the galaxy. [5]

Contents

Group Membership

NGC 4221 is a member of the NGC 4256 Group, [4] [7] [8] which lies in the upper plane of the Virgo Supercluster. [4]

See also

References

  1. 1 2 3 4 "Results for object NGC 4221 (NGC 4221)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2021-04-18.
  2. 1 2 3 4 5 "NGC 4221". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2021-04-18.
  3. 1 2 Crook, Aidan C.; Huchra, John P.; Martimbeau, Nathalie; Masters, Karen L.; Jarrett, Tom; Macri, Lucas M. (2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal. 655 (2): 790–813. arXiv: astro-ph/0610732 . Bibcode:2007ApJ...655..790C. doi:10.1086/510201. S2CID   11672751.
  4. 1 2 3 Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. (1992-05-01). "Groups of galaxies within 80 Mpc. II. The catalogue of groups and group members". Astronomy and Astrophysics Supplement Series. 93: 211–233. Bibcode:1992A&AS...93..211F. ISSN   0365-0138.
  5. 1 2 Seligman, Courtney. "New General Catalogue objects: NGC 4200 - 4249". cseligman.com. Retrieved 2021-04-18.
  6. ↑ Buta, Ronald J. (2017-11-01). "Galactic rings revisited - I. CVRHS classifications of 3962 ringed galaxies from the Galaxy Zoo 2 Database". Monthly Notices of the Royal Astronomical Society. 471 (4): 4027–4046. arXiv: 1707.06589 . Bibcode:2017MNRAS.471.4027B. doi: 10.1093/mnras/stx1829 . ISSN   0035-8711.
  7. ↑ Garcia, A. M. (1993-07-01). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47–90. Bibcode:1993A&AS..100...47G. ISSN   0365-0138.
  8. ↑ Giuricin, Giuliano; Marinoni, Christian; Ceriani, Lorenzo; Pisani, Armando (November 2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups". The Astrophysical Journal. 543 (1): 178–194. arXiv: astro-ph/0001140 . Bibcode:2000ApJ...543..178G. doi: 10.1086/317070 . ISSN   0004-637X. S2CID   9618325.


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