NGC 5986 is a globular cluster of stars in the southern constellation of Lupus, located at a distance of approximately 34 kilolight-years from the Sun.[3] It was discovered by Scottish astronomer James Dunlop on May 10, 1826. John L. E. Dreyer described it as, "a remarkable object, a globular cluster, very bright, large, round, very gradually brighter middle, stars of 13th to 15th magnitude".[8] Its prograde–retrograde orbit through the Milky Way galaxy is considered irregular and highly eccentric. It has a mean heliocentric radial velocity of +100 km/s.[4] The galacto-centric distance is 17 kly (5.2 kpc), which puts it in the galaxy's inner halo.[9]
This is relatively massive cluster has been poorly studied, at least as of 2017.[4] It is moderately concentrated, with a core radius of 28.2″ and a projected half-light radius of 58.8″. The three dimensional half-mass radius is ~78.16″.[10] The cluster has a higher metallicity – what astronomers term the abundance of elements with higher atomic number then helium – compared to most other objects of its type.[11] It may have at least 4–5 different stellar populations with distinct elemental compositions, and there is evidence that it has lost ~60–80% of its original mass.[4]
Further readingedit
Alves, David R.; et al. (January 2001). "CCD Photometry of the Globular Cluster NGC 5986 and Its Post-Asymptotic Giant Branch and RR Lyrae Stars". The Astronomical Journal. 121 (1): 318–326. arXiv:astro-ph/0010095. Bibcode:2001AJ....121..318A. doi:10.1086/318030. S2CID 119093584.
Referencesedit
^Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin, 849 (849): 11–14, Bibcode:1927BHarO.849...11S.
^ abGoldsbury, Ryan; et al. (December 2010), "The ACS Survey of Galactic Globular Clusters. X. New Determinations of Centers for 65 Clusters", The Astronomical Journal, 140 (6): 1830–1837, arXiv:1008.2755, Bibcode:2010AJ....140.1830G, doi:10.1088/0004-6256/140/6/1830, S2CID 119183070.
^ abcBoyles, J.; et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters", The Astrophysical Journal, 742 (1): 51, arXiv:1108.4402, Bibcode:2011ApJ...742...51B, doi:10.1088/0004-637X/742/1/51, S2CID 118649860.
^ abcdJohnson, Christian I.; et al. (June 2017). "Chemical Complexity in the Eu-enhanced Monometallic Globular NGC 5986". The Astrophysical Journal. 842 (1): 21. arXiv:1705.10840. Bibcode:2017ApJ...842...24J. doi:10.3847/1538-4357/aa7414. S2CID 119279995. 24.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^Seligman, Courtney. "New General Catalogue objects: NGC 5950 - 5999". cseligman.com. Retrieved 2020-09-20.
^Ortolani, S.; et al. (October 2000). "Colour-magnitude diagrams of the inner halo globular clusters NGC 5986 and NGC 6712". Astronomy and Astrophysics. 362: 953–958. Bibcode:2000A&A...362..953O.
^Lanzoni, B.; et al. (September 2018), "The ESO Multi-instrument Kinematic Survey (MIKiS) of Galactic Globular Clusters: Solid-body Rotation and Anomalous Velocity Dispersion Profile in NGC 5986", The Astrophysical Journal, 865 (1): 9, arXiv:1808.01194, Bibcode:2018ApJ...865...11L, doi:10.3847/1538-4357/aad810, S2CID 119414659, 11.
^Moni Bidin, C.; et al. (May 2009). "A lack of close binaries among hot horizontal branch stars in globular clusters. M 80 and NGC 5986". Astronomy and Astrophysics. 498 (3): 737–751. arXiv:0903.2072. Bibcode:2009A&A...498..737M. doi:10.1051/0004-6361/200810579. S2CID 16080323.
Wikimedia Commons has media related to NGC 5986.
External linksedit
Media related to NGC 5986 at Wikimedia Commons
NGC 5986 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
January 01, 1970
5986, globular, cluster, stars, southern, constellation, lupus, located, distance, approximately, kilolight, years, from, discovered, scottish, astronomer, james, dunlop, 1826, john, dreyer, described, remarkable, object, globular, cluster, very, bright, large. NGC 5986 is a globular cluster of stars in the southern constellation of Lupus located at a distance of approximately 34 kilolight years from the Sun 3 It was discovered by Scottish astronomer James Dunlop on May 10 1826 John L E Dreyer described it as a remarkable object a globular cluster very bright large round very gradually brighter middle stars of 13th to 15th magnitude 8 Its prograde retrograde orbit through the Milky Way galaxy is considered irregular and highly eccentric It has a mean heliocentric radial velocity of 100 km s 4 The galacto centric distance is 17 kly 5 2 kpc which puts it in the galaxy s inner halo 9 NGC 5986NGC 5986 by Hubble Space Telescope 3 5 viewObservation data J2000 epoch ClassVII 1 ConstellationLupusRight ascension15h 46m 03 00s 2 Declination 37 47 11 1 2 Distance33 9 kly 10 4 kpc 3 Apparent magnitude V 8 0Apparent dimensions V 5 Physical characteristicsAbsolute magnitude 8 44 4 Mass5 99 105 3 M Metallicity Fe H displaystyle begin smallmatrix left ce Fe ce H right end smallmatrix 1 35 5 dexEstimated age12 16 Gyr 5 Other designationsESO 329 SC 018 NGC 5986 6 7 See also Globular cluster List of globular clusters This is relatively massive cluster has been poorly studied at least as of 2017 4 It is moderately concentrated with a core radius of 28 2 and a projected half light radius of 58 8 The three dimensional half mass radius is 78 16 10 The cluster has a higher metallicity what astronomers term the abundance of elements with higher atomic number then helium compared to most other objects of its type 11 It may have at least 4 5 different stellar populations with distinct elemental compositions and there is evidence that it has lost 60 80 of its original mass 4 Further reading editAlves David R et al January 2001 CCD Photometry of the Globular Cluster NGC 5986 and Its Post Asymptotic Giant Branch and RR Lyrae Stars The Astronomical Journal 121 1 318 326 arXiv astro ph 0010095 Bibcode 2001AJ 121 318A doi 10 1086 318030 S2CID 119093584 References edit Shapley Harlow Sawyer Helen B August 1927 A Classification of Globular Clusters Harvard College Observatory Bulletin 849 849 11 14 Bibcode 1927BHarO 849 11S a b Goldsbury Ryan et al December 2010 The ACS Survey of Galactic Globular Clusters X New Determinations of Centers for 65 Clusters The Astronomical Journal 140 6 1830 1837 arXiv 1008 2755 Bibcode 2010AJ 140 1830G doi 10 1088 0004 6256 140 6 1830 S2CID 119183070 a b c Boyles J et al November 2011 Young Radio Pulsars in Galactic Globular Clusters The Astrophysical Journal 742 1 51 arXiv 1108 4402 Bibcode 2011ApJ 742 51B doi 10 1088 0004 637X 742 1 51 S2CID 118649860 a b c d Johnson Christian I et al June 2017 Chemical Complexity in the Eu enhanced Monometallic Globular NGC 5986 The Astrophysical Journal 842 1 21 arXiv 1705 10840 Bibcode 2017ApJ 842 24J doi 10 3847 1538 4357 aa7414 S2CID 119279995 24 a href Template Cite journal html title Template Cite journal cite journal a CS1 maint multiple names authors list link a b Forbes Duncan A Bridges Terry May 2010 Accreted versus in situ Milky Way globular clusters Monthly Notices of the Royal Astronomical Society 404 3 1203 1214 arXiv 1001 4289 Bibcode 2010MNRAS 404 1203F doi 10 1111 j 1365 2966 2010 16373 x S2CID 51825384 NASA IPAC Extragalactic Database Results for NGC 5986 Retrieved 2007 04 06 NGC 5986 SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 2020 02 25 Seligman Courtney New General Catalogue objects NGC 5950 5999 cseligman com Retrieved 2020 09 20 Ortolani S et al October 2000 Colour magnitude diagrams of the inner halo globular clusters NGC 5986 and NGC 6712 Astronomy and Astrophysics 362 953 958 Bibcode 2000A amp A 362 953O Lanzoni B et al September 2018 The ESO Multi instrument Kinematic Survey MIKiS of Galactic Globular Clusters Solid body Rotation and Anomalous Velocity Dispersion Profile in NGC 5986 The Astrophysical Journal 865 1 9 arXiv 1808 01194 Bibcode 2018ApJ 865 11L doi 10 3847 1538 4357 aad810 S2CID 119414659 11 Moni Bidin C et al May 2009 A lack of close binaries among hot horizontal branch stars in globular clusters M 80 and NGC 5986 Astronomy and Astrophysics 498 3 737 751 arXiv 0903 2072 Bibcode 2009A amp A 498 737M doi 10 1051 0004 6361 200810579 S2CID 16080323 nbsp Wikimedia Commons has media related to NGC 5986 External links edit nbsp Media related to NGC 5986 at Wikimedia Commons NGC 5986 on WikiSky DSS2 SDSS GALEX IRAS Hydrogen a X Ray Astrophoto Sky Map Articles and images Retrieved from https en wikipedia org w index php title NGC 5986 amp oldid 1188037683, wikipedia, wiki, book, books, library,
