Astronomy:NGC 5793
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Short description: Spiral galaxy in the constellation Libra
| NGC 5793 | |
|---|---|
 Hubble Space Telescope image of NGC 5793[1] | |
| Observation data (J2000 epoch) | |
| Constellation | Libra |
| Right ascension | 14h 59m 24.807s[2] |
| Declination | −16° 41′ 36.55″[2] |
| Redshift | 0.011645[3] |
| Helio radial velocity | 3,442±72 km/s[4] |
| Distance | 150 Mly (46 Mpc)[4] |
| Apparent magnitude (V) | 13.32[5] |
| Apparent magnitude (B) | 14.47[5] |
| Characteristics | |
| Type | Sb, Seyfert 2e[4] |
| Apparent size (V) | 1.160′ × 0.394′[2] (NIR) |
| Other designations | |
| NGC 5793[6] | |
NGC 5793 is an active spiral galaxy located approximately 150 million light years away in the constellation Libra. It is classified as a Type 2 Seyfert galaxy[4] and was discovered by Francis Leavenworth in 1886.[1][7] The galactic plane is inclined at an angle of 73°, giving it an oval, nearly edge-on appearance with the major axis aligned along a position angle of 150°.[4]
Seyfert galaxies such as NGC 5793 are known to house megamasers. Megamasers can have a luminosity of thousands of times greater than the Sun.[1] Neutral hydrogen has been detected against the galactic nucleus. This means that NGC 5793 has an estimated HI cloud size of ≈15 pc and an estimated atomic gas density of ≈200 cm -3.[8]
References
- ↑ 1.0 1.1 1.2 "Secrets at the heart of NGC 5793" (in en). ESA. March 17, 2014. https://www.spacetelescope.org/images/potw1411a/.
- ↑ 2.0 2.1 2.2 Skrutskie, Michael F. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S.
- ↑ "NASA/IPAC Extragalactic Database". California Institute of Technology. http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+5793.
- ↑ 4.0 4.1 4.2 4.3 4.4 Hagiwara, Y. et al. (August 2000). "Probing circumnuclear molecular gas in NGC 5793 with OH absorption". Astronomy and Astrophysics 360: 49-56. Bibcode: 2000A&A...360...49H.
- ↑ 5.0 5.1 Véron-Cetty, M.-P.; Véron, P. (2010). "A catalogue of quasars and active nuclei: 13th edition". Astronomy & Astrophysics 518 (A10): A10. doi:10.1051/0004-6361/201014188. Bibcode: 2010A&A...518A..10V.
- ↑ "NGC 5793". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+5793.
- ↑ Seligman, Courtney. "New General Catalog Objects: NGC 5750 - 5799". https://cseligman.com/text/atlas/ngc57a.htm.
- ↑ Pihlström, Y. M. et al. (November 1999). "VLBI observations of high-opacity HI gas in NGC 5793". New Astronomy Reviews 43 (8–10): 647–650. doi:10.1016/S1387-6473(99)00071-8. Bibcode: 1999NewAR..43..647P.
External links
- NGC 5793 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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