Ngc 4221

NGC 4221
NGC 4221
	SDSS image of NGC 4221
Observation data ( J2000 epoch)
Constellation	Draco
Right ascension	12h 15m 59.860s
Declination	+66° 13′ 50.90″
Redshift	0.00439
Heliocentric radial velocity	1313 ± 3 km/s
Distance	75.9 Mly (23.28 Mpc)
Group or cluster	NGC 4256 Group
Apparent magnitude (B)	13.6
Characteristics
Type	(R)SB0+(r)
Size	55,900 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^[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]

References

^ ^a ^b ^c ^d "Results for object NGC 4221 (NGC 4221)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2021-04-18.
^ ^a ^b ^c ^d ^e "NGC 4221". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-04-18.
^ ^a ^b 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.
^ ^a ^b ^c 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.
^ ^a ^b Seligman, Courtney. "New General Catalogue objects: NGC 4200 - 4249". cseligman.com. Retrieved 2021-04-18.
^ 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.
^ 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.
^ 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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[NED-1] "Results for object NGC 4221 (NGC 4221)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2021-04-18.

[SIMBAD-2] "NGC 4221". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-04-18.

[Crook-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.

[:0-4] 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.

[cseligman-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.

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NGC 4221
SDSS image of NGC 4221
Observation data ( J2000 epoch)
Constellation	Draco
Right ascension	12^h 15^m 59.860^s^[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]
Size	55,900 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]

Group Membership

See also

References

External links