NGC 4632

NGC 4632
NGC 4632 imaged by SDSS
Observation data (J2000 epoch)
Constellation	Virgo
Right ascension	12^h 42^m 31.9896^s[1]
Declination	−00° 04′ 57.684″[1]
Redshift	0.005741[1]
Heliocentric radial velocity	1,721±2 km/s[1]
Distance	99.2 ± 7.0 Mly (30.40 ± 2.16 Mpc)[1]
Group or cluster	NGC 4666 Group (LGG 299)
Apparent magnitude (V)	11.7[1]
Characteristics
Type	SAc[1]
Size	~50,400 ly (15.45 kpc) (estimated)[1]
Apparent size (V)	3.0′ × 1.2′[1]
Other designations
IRAS 12399+0011, UGC 7870, MCG +00-32-038, PGC 42689, CGCG 014-110[1]

NGC 4632 is a spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background for is 2,061±24 km/s, which corresponds to a Hubble distance of 99.2 ± 7.0 Mly (30.40 ± 2.16 Mpc).[1] However, 15 non-redshift measurements give a much closer distance of 54.12 ± 3.04 Mly (16.593 ± 0.931 Mpc).[2] It was discovered by German-British astronomer William Herschel on 22 February 1784.[3]

Polar Ringed Galaxy

It was discovered in 2023 that the galaxies NGC 4632 and NGC 6156 are surrounded by a disk of cold hydrogen orbiting 90 degrees around their disks.[4] These are the very first polar-ringed galaxies discovered through radio wave observations.[5] These observations were made as part of the WALLABY astronomical survey.

NGC 4666 Group

According to A. M. Garcia, NGC 4632 is a member of the NGC 4666 galaxy group (also known as LGG 299). This group has 3 members, including NGC 4666 and NGC 4668.[6]

Supernova

One supernova has been observed in NGC 4632:

• SN 1946B (type II, mag. 15.7) was discovered by Edwin Hubble in May, 1946.[7][8]

See also

• List of NGC objects (4001–5000)

References

1. "Results for object NGC 4632". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 21 December 2024.
2. "Distance Results for NGC 4632". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 21 December 2024.
3. Seligman, Courtney. "New General Catalogue Objects: NGC 4632". Celestial Atlas. Retrieved 21 December 2024.
4. Deg, N.; Palleske, R.; Spekkens, K.; Wang, J.; Jarrett, T.; English, J.; Lin, X.; Yeung, J.; Mould, J. R.; Catinella, B.; Dénes, H.; Elagali, A.; For, B -Q; Kamphuis, P.; Koribalski, B. S.; Lee-Waddell, K.; Murugeshan, C.; Oh, S.; Rhee, J.; Serra, P.; Westmeier, T.; Wong, O. I.; Bekki, K.; Bosma, A.; Carignan, C.; Holwerda, B. W.; Yu, N. (2023). "WALLABY pilot survey: The potential polar ring galaxies NGC 4632 and NGC 6156". Monthly Notices of the Royal Astronomical Society. 525 (3): 4663–4684. arXiv:2309.05841. doi:10.1093/mnras/stad2312.
5. English, Jayanne (13 September 2023). "NGC 4632: Galaxy with a Hidden Polar Ring". Astronomy Picture of the Day. ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. Retrieved 21 December 2024.
6. Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
7. "SN 1946B". Transient Name Server. IAU. Retrieved 21 December 2024.
8. Barbon, R.; Buondí, V.; Cappellaro, E.; Turatto, M. (1999). "The Asiago Supernova Catalogue - 10 years after". Astronomy and Astrophysics Supplement Series. 139 (3): 531. arXiv:astro-ph/9908046. Bibcode:1999A&AS..139..531B. doi:10.1051/aas:1999404.

External links

• Media related to NGC 4632 at Wikimedia Commons
• NGC 4632 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images