NGC 4725

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
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[1]
Right ascension	12^h 50^m 26.6^s[2]
Declination	+25° 30′ 03″[2]
Redshift	1206 ± 3 km/s[2]
Distance	40 ± 6 Mly (12.3 ± 1.9 Mpc)[3]
Apparent magnitude (V)	10.1[2]
Characteristics
Type	SAB(r)ab pec[4]
Apparent size (V)	10′.7 × 7′.6[2]
Other designations
UGC 7989,[2] PGC 43451[2]

NGC 4725 taken with a 24-inch telescope

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

See also

• Spitzer Space Telescope

References

1. 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.
2. "NASA/IPAC Extragalactic Database". Results for NGC 4725. Retrieved 2006-11-25.
3. 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.
4. "NASA/IPAC Extragalactic Database". Results for NGC 4725. Retrieved 2010-04-21.
5. 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.

External links

• NOAO: NGC 4725
• NGC 4725
• NASA Astronomy Picture of the Day: One-Armed Spiral Galaxy NGC 4725 (1 September 2005)
• NGC 4725 in Coma-Berenices