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NGC 4221

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Galaxy in constellation Draco
NGC 4221
SDSS image of NGC 4221
Observation data (J2000 epoch)
ConstellationDraco
Right ascension12 15 59.860
Declination+66° 13′ 50.90″
Redshift0.00439
Heliocentric radial velocity1313 ± 3 km/s
Distance75.9 Mly (23.28 Mpc)
Group or clusterNGC 4256 Group
Apparent magnitude (B)13.6
Characteristics
Type(R)SB0(r)
Size55,900 ly (17.15 kpc) (estimated)
Apparent size (V)1.347′ × 0.943′
Other designations
UGC 7288, MCG +11-15-040, PGC 39266

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

Group Membership

NGC 4221 is a member of the NGC 4256 Group, which lies in the upper plane of the Virgo Supercluster.

See also

References

  1. ^ "Results for object NGC 4221 (NGC 4221)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2021-04-18.
  2. ^ "NGC 4221". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-04-18.
  3. ^ 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. ^ 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. ^ 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.

External links

  • Media related to NGC 4221 at Wikimedia Commons
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