NGC 4615
| NGC 4615 | |
|---|---|
NGC 4615 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 41m 37.3313s[1] |
| Declination | +26° 04′ 21.871″[1] |
| Redshift | 0.015797±0.0000112[1] |
| Heliocentric radial velocity | 4,736±3 km/s[1] |
| Distance | 213 Mly (65.4 Mpc)[1] |
| Apparent magnitude (V) | 13.84[1] |
| Characteristics | |
| Type | Scd[1] |
| Size | ~160,400 ly (49.17 kpc) (estimated)[1] |
| Apparent size (V) | 1.6′ × 0.7′[1] |
| Other designations | |
| HOLM 439A, IRAS 12391+2620, 2MASX J12413730+2604223, Arp 34, UGC 7852, MCG +04-30-013, PGC 42584, CGCG 129-018[1] | |
NGC 4615 is a spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 5,022±20 km/s, which corresponds to a Hubble distance of 241.6 ± 16.9 Mly (74.07 ± 5.19 Mpc).[1] However, one non-redshift measurement gives a much closer distance of 213 Mly (65.4 Mpc).[2] It was discovered by German astronomer Heinrich d'Arrest on 9 May 1864.[3]
NGC 4615 is listed in Halton Arp's Atlas of Peculiar Galaxies as Arp 34, as an example of a galaxy that looks like a stretched-out S shape.[4]
NGC 4615 and NGC 4614 are listed together as Holm 439 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[5] This grouping was also listed by A. P. Mahtessian in a paper published in 1998.[6]
Supernovae
Two supernovae have been observed in NGC 4615:
- SN 1987F (Type II-P, mag. 15.8) was discovered independently by Natalya Metlova on 22 April 1987, and by Thomas Schildknecht on 23 April 1987.[7][8][9]
- SN 2025nzi (Type Ib, mag. 19.016) was discovered by ATLAS on 18 June 2025.[10]
See also
References
- ^ a b c d e f g h i j k "Results for object NGC 4615". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 22 June 2025.
- ^ "Distance Results for NGC 4615". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 22 June 2025.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 4615". Celestial Atlas. Retrieved 22 June 2025.
- ^ Arp, Halton (1966). "Atlas of Peculiar Galaxies". The Astrophysical Journal Supplement Series. 14: 1. Bibcode:1966ApJS...14....1A. doi:10.1086/190147.
- ^ Holmberg, Erik (1937). "A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems". Annals of the Observatory of Lund. 6: 1. Bibcode:1937AnLun...6....1H.
- ^ Mahtessian, A. P. (1998). "Groups of galaxies. III. Some empirical characteristics". Astrophysics. 41 (3): 308. Bibcode:1998Ap.....41..308M. doi:10.1007/BF03036100.
- ^ Wild, P.; Schildknecht, T. (1987). "Supernova 1987F in NGC 4615". International Astronomical Union Circular (4374): 1. Bibcode:1987IAUC.4374....1W.
- ^ Cherepashchuk, A. M.; Metlova, N.; Wheeler, J. C.; Kirshner, R. P.; Crotts, A.; McMahan, R.; Wegner, G.; Swanson, S. (1987). "Supernova 1987F in NGC 4615?". International Astronomical Union Circular (4381): 1. Bibcode:1987IAUC.4381....1C.
- ^ "SN 1987F". Transient Name Server. IAU. Retrieved 22 June 2025.
- ^ "SN 2025nzi". Transient Name Server. IAU. Retrieved 22 June 2025.
External links
- Media related to NGC 4615 at Wikimedia Commons
- NGC 4615 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images