UGC 2450
| UGC 2450 | |
|---|---|
 Pan-STARRS image of the cD galaxy UGC 2450 | |
| Observation data (J2000 epoch) | |
| Constellation | Aries |
| Right ascension | 02h 58m 57.89s[1] |
| Declination | +13° 34′ 59.37″[1] |
| Redshift | 0.071419[1] |
| Heliocentric radial velocity | 21411 ± 16 km/s[1] |
| Distance | 1,031.8 ± 72.2 Mly (316.36 ± 22.15 Mpc)[1] |
| Group or cluster | Abell 401 |
| magnitude (J) | 11.72[1] |
| magnitude (H) | 11.35[1] |
| Characteristics | |
| Type | cD[1] |
| Size | ~514,000 ly (157.7 kpc) (estimated)[1] |
| Other designations | |
| 2MASX J02585781+1334583, Abell 0401:[FDE2024] BCG, PGC 11277, MCG +02-08-044, RX J0258.9+1334:[ZEH2003] 02[1] | |
UGC 2450 is an elliptical galaxy of type-cD in the constellation of Aries. The redshift of the galaxy is (z) 0.071[1] and it was first discovered by astronomers in December 1977.[2] It is the brightest cluster galaxy (BCG) of the Bautz-Morgan Class Type I galaxy cluster, Abell 401.[3][4]
Description
[edit]UGC 2450 is a type-cD galaxy. It contains a central nucleus with a stellar velocity dispersion of around 480 ± 120 kilometers per seconds. The galactic halo has an estimated stellar velocity dispersion of 470 ± 250 kilometers per second. The halo does not show signs of being metal poor based on absorption line strength in its own optical spectrum.[2] The nuclear region is described as both red and faint.[5] The total K-band apparent magnitude for this cD galaxy is estimated to be 10.03 ± 0.04.[6]
A study published in July 1980 based on radio imaging made with the Very Large Array (VLA), has found the cD galaxy is mainly radio-quiet with an absence of both emission lines and a powerful radio source, although the measured radio power is estimated to be <5 × 1021 W Hz-1.[7][8]
There is evidence that a neighboring satellite galaxy might be located near UGC 2450. This galaxy is estimated to have a separation of 20 kiloparsecs with a velocity of 600 kilometers per seconds.[9] A supermassive black hole is present in the center of the cD galaxy with a mass of 10.02 ± 0.03 Mʘ based on an M–sigma relation between its black hole and stellar budge.[6]
References
[edit]- ^ a b c d e f g h i j k "NED Search results for UGC 2450". NASA/IPAC Extragalactic Database. Retrieved 2026-05-10.
- ^ a b Faber, S. M.; Burstein, D.; Dressler, A. (December 1977). "Spectrum of the halo of the cD galaxy in Abell 401". The Astronomical Journal. 82: 941. Bibcode:1977AJ.....82..941F. doi:10.1086/112152. ISSN 0004-6256.
- ^ Ftaclas, C.; Struble, M. F. (November 1983). "The intrinsic shape of cD galaxies". The Astrophysical Journal. 274: 521–528. Bibcode:1983ApJ...274..521F. doi:10.1086/161465. ISSN 0004-637X.
- ^ Murphy, H. P.; Schild, R. E.; Weekes, T. C. (March 1983). "CCD camera observations of nearby rich clusters. I. R photometry of brightest galaxies". Monthly Notices of the Royal Astronomical Society. 202: 1127–1139. doi:10.1093/mnras/202.4.1127. ISSN 0035-8711.
- ^ Nilson, P. (1973). "Uppsala General Catalogue of Galaxies, 1973, Acta Universitatis Upsalienis, Nova Regiae Societatis Upsaliensis, Series v: a Vol". Nova Acta Regiae Soc. Sci. Upsaliensis Ser. V: 0. Bibcode:1973UGC...C...0000N.
- ^ a b Ríos-López, Emmanuel; López-Cruz, Omar; Añorve, Christopher; Valerdi, Mabel; Dufrane, Victoria R; Rodríguez-Hernández, Erick A (2025-04-25). "2D surface brightness modelling of large 2MASS galaxies II: the role of classical bulges and pseudobulges on galaxy scaling relations and its implication for supermassive black hole formation" (PDF). Monthly Notices of the Royal Astronomical Society. 539 (3): 2583–2607. doi:10.1093/mnras/staf606. ISSN 0035-8711.
- ^ Burns, Jack O. (January 1990). "The Radio Properties of cD Galaxies in Abell Clusters. I. an X-ray Selected Sample". The Astronomical Journal. 99: 14. Bibcode:1990AJ.....99...14B. doi:10.1086/115307. ISSN 0004-6256.
- ^ Burns, J. O.; Ulmer, M. P. (July 1980). "On the distribution of radio emission in the X-ray cluster of galaxies Abell 401". The Astronomical Journal. 85: 773–779. Bibcode:1980AJ.....85..773B. doi:10.1086/112739. ISSN 0004-6256.
- ^ Cowie, L. L.; Hu, E. M. (June 1986). "Kinematic Evidence of Satellite Galaxy Populations in the Potential Wells of First-ranked Cluster Galaxies". The Astrophysical Journal. 305: L39. Bibcode:1986ApJ...305L..39C. doi:10.1086/184681. ISSN 0004-637X.
External links
[edit]- UGC 2450 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
