Astronomy:NGC 4221

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Short description: Galaxy in constellation Draco
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NGC4221 - SDSS DR14.jpg
SDSS image of NGC 4221
Observation data (J2000 epoch)
ConstellationDraco
Right ascension 12h 15m 59.860s[1]
Declination+66° 13′ 50.90″[1]
Redshift0.00439[2]
Helio radial velocity1313 ± 3 km/s[2]
Distance75.9 Mly (23.28 Mpc)[3]
Group or clusterNGC 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]

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. ↑ 1.0 1.1 1.2 1.3 "Results for object NGC 4221 (NGC 4221)". NASA/IPAC Extragalactic Database. California Institute of Technology. https://ned.ipac.caltech.edu/byname?objname=NGC%204221&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1. Retrieved 2021-04-18. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 "NGC 4221". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+4221. 
  3. ↑ 3.0 3.1 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. doi:10.1086/510201. Bibcode: 2007ApJ...655..790C. 
  4. ↑ 4.0 4.1 4.2 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. ISSN 0365-0138. Bibcode: 1992A&AS...93..211F. https://ui.adsabs.harvard.edu/abs/1992A&AS...93..211F. 
  5. ↑ 5.0 5.1 Seligman, Courtney. "New General Catalogue objects: NGC 4200 - 4249". http://cseligman.com/text/atlas/ngc42.htm#4221. 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. doi:10.1093/mnras/stx1829. ISSN 0035-8711. Bibcode: 2017MNRAS.471.4027B. https://ui.adsabs.harvard.edu/abs/2017MNRAS.471.4027B. 
  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. ISSN 0365-0138. Bibcode: 1993A&AS..100...47G. https://ui.adsabs.harvard.edu/abs/1993A&AS..100...47G. 
  8. ↑ Giuricin, Giuliano; Marinoni, Christian; Ceriani, Lorenzo; Pisani, Armando (November 2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups" (in en). The Astrophysical Journal 543 (1): 178–194. doi:10.1086/317070. ISSN 0004-637X. Bibcode: 2000ApJ...543..178G. 

External links

Coordinates: Sky map 12h 15m 59.860s, +66° 13′ 50.90″




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