NGC 3729
| NGC3729 | |
|---|---|
 NGC 3729 byHubble Space Telescope | |
| Observation data (J2000epoch) | |
| Constellation | Ursa Major |
| Right ascension | 11h33m49.3s[1] |
| Declination | 53° 07′ 32″[1] |
| Redshift | 1,060 ± 1km/s[1] |
| Distance | 65.7± 4.8Mly(20.2 ± 1.5Mpc)[1] |
| Apparent magnitude(V) | 11.0[2] |
| Characteristics | |
| Type | SB(r)a pec[1] |
| Apparent size(V) | 2.8′× 1.8′[1] |
| Other designations | |
| UGC6547, CGCG 268-051,MCG+09-19-117,PGC35711[1] | |
NGC 3729is abarred spiral galaxylocated in the constellationUrsa Major.It is located at a distance of circa 65 millionlight yearsfrom Earth, which, given its apparent dimensions, means that NGC 3729 is about 60,000 light years across. It was discovered byWilliam Herschelon April 12, 1789.[3]
NGC 3729 has a bright nucleus embedded in a bar which measures 0.5 x 0.1 arcminutes. At the end of the bar lies a ring with knots. The outer part of the galaxy is formed by an asymmetric faint nebulosity with condensations.[4]It is possible that the condensation is a disturbed satellite galaxy.[5]In the centre of NGC 3729 is predicted to lie an intermediate-massblack hole,whose mass is estimated to be between 4 and 400 thousandsM☉(104.6 ± 1.0M☉) based on Ks-band bulge luminosity.[6]The galaxy has an inner ring which emits in farultravioletandH- Alpha,which are considered to be markers of recentstar formationactivity.[7]
NGC 3729 is member of theM109 Group[8]which is part of the southUrsa Major groups,part of theVirgo Supercluster.[9]It forms a pair withNGC 3718,which lies 11.5 arcminutes to the west.[4]It is possible the two galaxiesinteractedin the past.[10]
Although nosupernovaehave been observed in NGC 3729 yet, aluminous red nova,designated AT 2018hso, was discovered on 31 October 2018 (type LRN, mag. 19.4).[11]
References
[edit]- ^abcdefg"NASA/IPAC Extragalactic Database".Results for NGC 3729.Retrieved2019-01-18.
- ^"Revised NGC Data for NGC 3729".spider.seds.org.Retrieved25 November2018.
- ^NGC 3729cseligman
- ^abde Vaucouleurs, Gerard Henri; de Vaucouleurs, Antoinette; Shapley, Harlow (1964).Reference catalogue of bright galaxies.Austin: University of Texas Press.Bibcode:1964rcbg.book.....D.
- ^Morales, Gustavo; Martínez-Delgado, David; Grebel, Eva K.; Cooper, Andrew P.; Javanmardi, Behnam; Miskolczi, Arpad (29 June 2018). "Systematic search for tidal features around nearby galaxies".Astronomy & Astrophysics.614:A143.arXiv:1804.03330.doi:10.1051/0004-6361/201732271.S2CID118981195.
- ^Graham, Alister W.; Scott, Nicholas (1 February 2013). "The MBH-lspheroid relation at high and low masses, the quadratic growth of black holes, and intermediate-mass black hole candidates".The Astrophysical Journal.764(2): 151.arXiv:1211.3199.Bibcode:2013ApJ...764..151G.doi:10.1088/0004-637X/764/2/151.S2CID96428441.
- ^Comerón, S. (9 July 2013). "Inner rings in disc galaxies: dead or alive".Astronomy & Astrophysics.555:L4.arXiv:1306.4515.Bibcode:2013A&A...555L...4C.doi:10.1051/0004-6361/201321983.S2CID56144824.
- ^Makarov, Dmitry; Karachentsev, Igor (21 April 2011)."Galaxy groups and clouds in the local (z~ 0.01) Universe".Monthly Notices of the Royal Astronomical Society.412(4): 2498–2520.arXiv:1011.6277.Bibcode:2011MNRAS.412.2498M.doi:10.1111/j.1365-2966.2010.18071.x.S2CID119194025.
- ^"The Ursa Major Groups".atlasoftheuniverse.
- ^Markakis, K.; Dierkes, J.; Eckart, A.; Nishiyama, S.; Britzen, S.; García-Marín, M.; Horrobin, M.; Muxlow, T.; Zensus, J. A. (20 July 2015). "Subaru and e-Merlin observations of NGC 3718".Astronomy & Astrophysics.580:A11.arXiv:1504.03691.doi:10.1051/0004-6361/201425077.S2CID56022608.
- ^Transient Name Server entry for AT 2018hso.Retrieved 10 November 2023.
External links
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Media related toNGC 3729at Wikimedia Commons- NGC 3729 onWikiSky:DSS2,SDSS,GALEX,IRAS,Hydrogen α,X-Ray,Astrophoto,Sky Map,Articles and images
