NGC 6269
| NGC 6269 | |
|---|---|
 SDSS image of NGC 6269 | |
| Observation data (J2000 epoch) | |
| Constellation | Hercules |
| Right ascension | 16h 57m 58.10s[1] |
| Declination | +27° 51′ 15.85″[1] |
| Redshift | 0.034801[1] |
| Heliocentric radial velocity | 10,433 ± 13 km/s[1] |
| Distance | 509.1 ± 35.6 Mly (156.10 ± 10.93 Mpc)[1] |
| Group or cluster | AWM 5 |
| Apparent magnitude (V) | 12.4[2] |
| Characteristics | |
| Type | cD;E[1] |
| Size | ~233,000 ly (71.3 kpc) (estimated)[1] |
| Other designations | |
| CGCG 169-019, UGC 10629, PGC 59332, MCG +05-40-012, GIN 626, NSA 147539, AWM 5:[L84] G1[1] | |
NGC 6269 is an elliptical galaxy located in the constellation of Hercules. The redshift of the galaxy is (z) 0.034[1] and it was first discovered by the German astronomer named Albert Marth in June 28, 1864, whom he described it as both small, round and also a faint object.[3] It is a Type-cD galaxy.[4]
Description
[edit]NGC 6269 is the central Type-cD galaxy and the brightest cluster galaxy (BCG) of a poor galaxy cluster called AWM 5.[5][6][7] It is categorized as a radio galaxy based on a radio morphology study published in 2007.[8] However, the source located in the central region is mainly weak with a pair of resolved radio lobes located from north to south directions, extending from the center by around 25 arcseconds. The radio flux densities of the lobes are estimated to be 8 and 10 mJy.[4] A further study has also shown most of the radio emission is mainly confined to a region located within the optical envelope. The central component has a misaligned radio axis based on imaging.[7]
The stellar population in NGC 6269 is estimated to be at 0.95 ± 0.08 billion years, based on a study of stellar populations located at the central regions of brightest cluster galaxies, conducted in 2009.[9] The active galactic nucleus (AGN) cavity is estimated to have a power of 0.02+0.01−0.01 × 1044 erg s−1.[10] The supermassive black hole at the center of the galaxy is classified as now dormant and it has a mass of around 109 M☉.[4] The total blue luminosity of the galaxy has been found to be around -23.63 magnitude.[11]
References
[edit]- ^ a b c d e f g h i "NED Search results for NGC 6269". NASA/IPAC Extragalactic Database. Retrieved 2026-04-01.
- ^ "Revised NGC Data for NGC 6269". spider.seds.org. Retrieved 30 March 2024.
- ^ "New General Catalog Objects: NGC 6250 - 6299". cseligman.com. Retrieved 2026-04-01.
- ^ a b c Baldi, A.; Forman, W.; Jones, C.; Nulsen, P.; David, L.; Kraft, R.; Simionescu, A. (March 2009). "Chandra Observations of the Galaxy Group AWM 5: Cool Core Reheating and Thermal Conduction Suppression". The Astrophysical Journal. 694 (1): 479–491. doi:10.1088/0004-637X/694/1/479. ISSN 0004-637X.
- ^ Dahlem, M.; Thiering, I. (February 2000). "Diffuse X-Ray Emission in Three Poor Clusters of Galaxies". Publications of the Astronomical Society of the Pacific. 112 (768): 148–162. doi:10.1086/316511. ISSN 0004-6280.
- ^ O'Sullivan, Ewan; Ponman, Trevor J.; Collins, Ross S. (April 2003). "X-ray scaling properties of early-type galaxies". Monthly Notices of the Royal Astronomical Society. 340 (4): 1375–1399. doi:10.1046/j.1365-8711.2003.06396.x. ISSN 0035-8711.
- ^ a b Giacintucci, Simona; O'Sullivan, Ewan; Vrtilek, Jan; David, Laurence P.; Raychaudhury, Somak; Venturi, Tiziana; Athreya, Ramana M.; Clarke, Tracy E.; Murgia, Matteo; Mazzotta, Pasquale; Gitti, Myriam; Ponman, Trevor; Ishwara-Chandra, C. H.; Jones, Christine; Forman, William R. (2011-04-21). "A COMBINED LOW-RADIO FREQUENCY/X-RAY STUDY OF GALAXY GROUPS. I. GIANT METREWAVE RADIO TELESCOPE OBSERVATIONS AT 235 MHz AND 610 MHz". The Astrophysical Journal. 732 (2): 95. doi:10.1088/0004-637x/732/2/95. ISSN 0004-637X.
- ^ Giacintucci, S.; Venturi, T.; Murgia, M.; Dallacasa, D.; Athreya, R.; Bardelli, S.; Mazzotta, P.; Saikia, D. J. (2007-08-31), Radio morphology and spectral analysis of cD galaxies in rich and poor galaxy clusters, arXiv, doi:10.48550/arXiv.0708.4330, arXiv:0708.4330, retrieved 2026-04-01
- ^ Loubser, S. I.; Sánchez-Blázquez, P.; Sansom, A. E.; Soechting, I. K. (September 2009). "Stellar populations in the centres of brightest cluster galaxies". Monthly Notices of the Royal Astronomical Society. 398 (1): 133–156. doi:10.1111/j.1365-2966.2009.15171.x. ISSN 0035-8711.
- ^ McDonald, Michael; McNamara, Brian R.; Calzadilla, Michael S.; Chen, Chien-Ting; Gaspari, Massimo; Hickox, Ryan C.; Kara, Erin; Korchagin, Ilia (2021-02-01). "Observational Evidence for Enhanced Black Hole Accretion in Giant Elliptical Galaxies". The Astrophysical Journal. 908 (1): 85. doi:10.3847/1538-4357/abd47f. ISSN 0004-637X.
- ^ Peletier, Reynier F.; Davies, Roger L.; Illingworth, Garth D.; Davis, Lindsey E.; Cawson, Michael (October 1990). "CCD Surface Photometry of Galaxies with Dynamical Data. II. UBR Photometry of 39 Elliptical Galaxies". The Astronomical Journal. 100: 1091. doi:10.1086/115582. ISSN 0004-6256.
External links
[edit]- NGC 6269 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
