NGC 7319
| NGC7319 | |
|---|---|
 NGC 7319 imaged by theHubble Space Telescope | |
| Observation data (J2000epoch) | |
| Constellation | Pegasus |
| Right ascension | 22h36m03.56s[1] |
| Declination | +33° 58′ 32.7″[1] |
| Redshift | 0.022[1] |
| Heliocentric radial velocity | 6,740 km/s[2] |
| Distance | 311Mly(95.3Mpc)[1] |
| Apparent magnitude(V) | 14.1[3] |
| Characteristics | |
| Type | SB(s)bc pec[3] |
| Apparent size(V) | 1′.7 × 1′.3[3] |
| Other designations | |
| NGC7319,UGC12102,LEDA69269,PGC69269[4][3] | |
NGC 7319is a highly distortedbarred spiral galaxythat is a member of the compactStephan's Quintet[5]group located in theconstellationPegasus,some 311megalight-yearsdistant from theMilky Way.[1]The galaxy's arms, dust and gas have been highly disturbed as a result of the interaction with the other members of the Quintet. Nearly all of the neutral hydrogen has been stripped from this galaxy, most likely as a result of a collision withNGC 7320csome 100 million years ago.[6]A pair of long, paralleltidal tailsextend southward from NGC 7319 in the direction of NGC 7320c, and is undergoingstar formation.[7]
This is a type 2Seyfert galaxy[1]with one of the largest circumnuclear outflows known in galaxies of this type. This outflow reaches velocities of up to500 km/sand spans 13 kly. Thestar formationrate appears normal for a spiral galaxy at1.98±0.58M☉yr−1,and the majority (68%) is occurring in thespiral arms.[7]The core appears faint in theultravioletband, indicating heavyextinctionwithin theactive galactic nucleus.[7]There is a three componentradiosource with an overall size of 5.5 kly that is straddling the nucleus.[8]A strongX-ray sourcewith a highredshifthas been detected at a separation of8″from the galactic nucleus, aquasi-stellar object.[2]
Onesupernovahas been observed in NGC 7319: On 19 August 1971, Leonida Rosino discovered SN 1971P (type unknown, mag. 16.8).[9]
References
[edit]- ^abcdefKoss, Michael; et al. (October 2011). "Host Galaxy Properties of the Swift Bat Ultra Hard X-Ray Selected Active Galactic Nucleus".The Astrophysical Journal.739(2): 20.arXiv:1107.1237.Bibcode:2011ApJ...739...57K.doi:10.1088/0004-637X/739/2/57.S2CID118119154.57.
- ^abGalianni, Pasquale; et al. (February 2005). "The Discovery of a High-Redshift X-Ray-Emitting QSO Very Close to the Nucleus of NGC 7319".The Astrophysical Journal.620(1): 88–94.arXiv:astro-ph/0409215.Bibcode:2005ApJ...620...88G.doi:10.1086/426886.S2CID757970.
- ^abcd"NASA/IPAC Extragalactic Database".Results for NGC 7319.Retrieved2007-04-21.
- ^"NGC 7319".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2020-10-08.
- ^Di Mille, F.; et al. (October 2008). Funes, José G.; J., S.; Corsini, Enrico Maria (eds.).3D Spectroscopy of the Nuclear Environment of a Selected Sample of Nearby Active Galactic Nuclei: NGC 7319.Formation and Evolution of Galaxy Disks. Proceedings of the conference held 1–5 October 2007 at the Centro Convegni Matteo Ricci, Rome, Italy. ASP Conference Series. Vol. 396. San Francisco: Astronomical Society of the Pacific. p. 61.Bibcode:2008ASPC..396...61D.
- ^Moles, M.; et al. (August 1997). "The Dynamical Status of Stephan's Quintet".The Astrophysical Journal.485(2): L69–L73.arXiv:astro-ph/9707194.Bibcode:1997ApJ...485L..69M.doi:10.1086/310817.S2CID19033219.
- ^abcXu, C. Kevin; et al. (January 2005). "Ultraviolet Emission and Star Formation in Stephan's Quintet".The Astrophysical Journal.619(1): L95–L98.arXiv:astro-ph/0411319.Bibcode:2005ApJ...619L..95X.doi:10.1086/425130.S2CID119371650.
- ^Aoki, Kentaro; et al. (August 1999). "The Radio Emission of the Seyfert Galaxy NGC 7319".The Astrophysical Journal.521(2): 565–571.arXiv:astro-ph/9812365.Bibcode:1999ApJ...521..565A.doi:10.1086/307559.S2CID8435704.
- ^Transient Name Server entry for SN 1971P.Retrieved 25 March 2023.
External links
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Media related toNGC 7319at Wikimedia Commons- NGC 7319 onWikiSky:DSS2,SDSS,GALEX,IRAS,Hydrogen α,X-Ray,Astrophoto,Sky Map,Articles and images
