NGC 632 is a lenticular galaxy in the constellation of Pisces. Its velocity with respect to the cosmic microwave background is 2,868±22 km/s, which corresponds to a Hubble distance of 138.0 ± 9.7 Mly (42.30 ± 2.98 Mpc).[1] However, eight non-redshift measurements give a closer mean distance of 125.65 ± 6.74 Mly (38.525 ± 2.066 Mpc).[2] It was discovered by British astronomer John Herschel on 24 September 1830.[3]
| NGC 632 | |
|---|---|
 NGC 632 imaged by Legacy Surveys | |
| Observation data (J2000 epoch) | |
| Constellation | Pisces |
| Right ascension | 01h 37m 17.5512s[1] |
| Declination | +05° 52′ 38.550″[1] |
| Redshift | 0.010567±0.0000200[1] |
| Heliocentric radial velocity | 3,168±6 km/s[1] |
| Distance | 125.65 ± 6.74 Mly (38.525 ± 2.066 Mpc)[2] |
| Group or cluster | NGC 645 Group (LGG 28) |
| Apparent magnitude (V) | 12.4[1] |
| Characteristics | |
| Type | S0[1] |
| Size | ~62,100 ly (19.05 kpc) (estimated)[1] |
| Apparent size (V) | 1.0′ × 0.8′[1] |
| Other designations | |
| IRAS 01346+0537, 2MASX J01371753+0552389, UGC 1157, MCG +01-05-010, Mrk 1002, PGC 6007, CGCG 412-008[1] | |
NGC 632 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[4][5]
NGC 632 has a nucleus which shines in the ultraviolet range, and is thus listed in Markarian's catalogue as Mrk 1002.[6]
NGC 645 Group
editSupernova
editOne supernova has been observed in NGC 632:
- SN 1998es (Type Ia-pec, mag. 14.6) was discovered by the Lick Observatory Supernova Search (LOSS) on 13 November 1998.[9][10]
See also
editReferences
edit- 1 2 3 4 5 6 7 8 9 10 "Results for object NGC 632". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 23 March 2026.
- 1 2 "Distance Results for NGC 632". NASA/IPAC Extragalactic Database. NASA. Retrieved 23 March 2026.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 632". Celestial Atlas. Retrieved 23 March 2026.
- ↑ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; Alexander, D. M.; Assef, R. J.; Baldi, R. D.; Davies, R. I.; Hönig, S. F.; Ricci, C.; Rosario, D. J.; Salvato, M.; Shankar, F.; Stern, D. (2020). "Local AGN survey (LASr): I. Galaxy sample, infrared colour selection, and predictions for AGN within 100 MPC". Monthly Notices of the Royal Astronomical Society. 494 (2): 1784. arXiv:2003.05959. Bibcode:2020MNRAS.494.1784A. doi:10.1093/mnras/staa766.
- ↑ "NGC 632". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 March 2026.
- ↑ Markarian, B. E.; Lipovetskii, V. A.; Stepanian, D. A. (1977). "Galaxies with ultraviolet continuum. XI". Astrofizika. 13: 397. Bibcode:1977Afz....13..397M.
- ↑ 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.
- ↑ "LGG 28". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 March 2026.
- ↑ Halderson, E.; Modjaz, M.; Shefler, T.; King, J. Y.; Papenkova, M.; Li, W. D.; Treffers, R. R.; Filippenko, A. V.; Nakano, S.; Kushida, R.; Kushida, Y. (1998). "Supernova 1998es in NGC 632". International Astronomical Union Circular (7050): 1. Bibcode:1998IAUC.7050....1H.
- ↑ "SN 1998es". Transient Name Server. IAU. Retrieved 23 March 2026.
External links
edit
Media related to NGC 632 at Wikimedia Commons- NGC 632 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
