Astronomy:NGC 4632
| NGC 4632 | |
|---|---|
 NGC 4632 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 42m 31.9896s[1] |
| Declination | −00° 04′ 57.684″[1] |
| Redshift | 0.005741[1] |
| Helio 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[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 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
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 "Results for object NGC 4632". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+4632.
- ↑ "Distance Results for NGC 4632". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+4632.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 4632". https://cseligman.com/text/atlas/ngc46.htm#4632.
- ↑ Deg, N.; Palleske, R.; Spekkens, K.; Wang, J.; Jarrett, T.; English, J.; Lin, X.; Yeung, J. et al. (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. doi:10.1093/mnras/stad2312.
- ↑ English (13 September 2023). "NGC 4632: Galaxy with a Hidden Polar Ring". ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U.. https://apod.nasa.gov/apod/ap230913.html.
- ↑ 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.
- ↑ "SN 1946B". IAU. https://www.wis-tns.org/object/1946B.
- ↑ Barbon, R.; Buondí, V.; Cappellaro, E.; Turatto, M. (1999). "The Asiago Supernova Catalogue - 10 years after". Astronomy and Astrophysics Supplement Series 139 (3): 531. doi:10.1051/aas:1999404. Bibcode: 1999A&AS..139..531B.
External links
- NGC 4632 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
 |  |
