NGC 4725

NGC 4725
NGC 4725
	A mid-infrared image of NGC 4725 taken by the Spitzer Space Telescope (SST).; Credit: Spitzer Infrared Nearby Galaxies Survey/SST/NASA.
Observation data (J2000 epoch)
Constellation	Coma Berenices
Right ascension	12h 50m 26.6s
Declination	+25° 30′ 03″
Redshift	1206 ± 3 km/s
Distance	40 ± 6 Mly (12.3 ± 1.9 Mpc)
Apparent magnitude (V)	10.1
Characteristics
Type	SAB(r)ab pec
Apparent size (V)	10′.7 × 7′.6
Other designations
	UGC 7989, PGC 43451

NGC 4725 is an intermediate barred spiral galaxy with a prominent ring structure about 40 million light-years away in the constellation Coma Berenices. NGC 4725 is a Seyfert Galaxy, suggesting an active galactic nucleus containing a supermassive black hole.

NGC 4725 is the brightest member of the Coma I Group.^[5]

References

^ R. W. Sinnott, ed. (1988). The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer. Sky Publishing Corporation and Cambridge University Press. ISBN 978-0-933346-51-2.
^ ^a ^b ^c ^d ^e ^f ^g "NASA/IPAC Extragalactic Database". Results for NGC 4725. Retrieved 2006-11-25.
^ Jensen, Joseph B.; Tonry, John L.; Barris, Brian J.; Thompson, Rodger I.; et al. (February 2003). "Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations". Astrophysical Journal. 583 (2): 712–726. arXiv:astro-ph/0210129. Bibcode:2003ApJ...583..712J. doi:10.1086/345430.
^ "NASA/IPAC Extragalactic Database". Results for NGC 4725. Retrieved 2010-04-21.
^ Gregory, S.A.; Thompson, L. A. (1977). "The Coma I Galaxy Cloud". The Astrophysical Journal. 213: 345–350. Bibcode:1977ApJ...213..345G. doi:10.1086/155160. ISSN 0004-637X.

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