NGC 1806 is a globular cluster located within the Large Magellanic Cloud within the constellation of Dorado (the dolphin-fish), an area of the sky best seen from the Earth's southern hemisphere. It was discovered in 1836 by the British astronomer John Herschel. At an aperture of 50 arcseconds, its apparent V-band magnitude is 11.00, but at this wavelength, it has 0.05 magnitudes of interstellar extinction.[3]
NGC 1806 is about 1.6 billion years old. Its estimated mass is 7.6×104M☉, and its total luminosity is 1.42×105L☉, leading to a mass-to-luminosity ratio of 0.54 M☉/L☉.[3] All else equal, older star clusters have higher mass-to-luminosity ratios; that is, they have lower luminosities for the same mass.[3]
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
^ abcdefSong, Ying-Yi; Mateo, Mario; Bailey, John I.; Walker, Matthew G.; Roederer, Ian U.; Olszewski, Edward W.; Reiter, Megan; Kremin, Anthony (2021). "Dynamical masses and mass-to-light ratios of resolved massive star clusters – II. Results for 26 star clusters in the Magellanic Clouds". Monthly Notices of the Royal Astronomical Society. 504 (3): 4160–4191. arXiv:2104.06882. doi:10.1093/mnras/stab1065.
External linksedit
Media related to NGC 1806 at Wikimedia Commons
A Great Ball of Stars — ESA/Hubble Picture of the week
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1806, globular, cluster, located, within, large, magellanic, cloud, within, constellation, dorado, dolphin, fish, area, best, seen, from, earth, southern, hemisphere, discovered, 1836, british, astronomer, john, herschel, aperture, arcseconds, apparent, band, . NGC 1806 is a globular cluster located within the Large Magellanic Cloud within the constellation of Dorado the dolphin fish an area of the sky best seen from the Earth s southern hemisphere It was discovered in 1836 by the British astronomer John Herschel At an aperture of 50 arcseconds its apparent V band magnitude is 11 00 but at this wavelength it has 0 05 magnitudes of interstellar extinction 3 NGC 1806NGC 1806 image taken by the Hubble Space TelescopeObservation data J2000 epoch ClassVI 1 ConstellationDoradoRight ascension05h 02m 11 180s 2 Declination 67 59 05 89 2 Apparent magnitude V 11 00 3 Physical characteristicsMass7 6 104 3 M Estimated age1 60 0 05 Gyr 3 Other designationsNGC 1806 KMHK 462 SL63 184See also Globular cluster List of globular clusters NGC 1806 is about 1 6 billion years old Its estimated mass is 7 6 104 M and its total luminosity is 1 42 105 L leading to a mass to luminosity ratio of 0 54 M L 3 All else equal older star clusters have higher mass to luminosity ratios that is they have lower luminosities for the same mass 3 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 NGC 1806 SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 8 January 2019 a b c d e f Song Ying Yi Mateo Mario Bailey John I Walker Matthew G Roederer Ian U Olszewski Edward W Reiter Megan Kremin Anthony 2021 Dynamical masses and mass to light ratios of resolved massive star clusters II Results for 26 star clusters in the Magellanic Clouds Monthly Notices of the Royal Astronomical Society 504 3 4160 4191 arXiv 2104 06882 doi 10 1093 mnras stab1065 External links edit nbsp Media related to NGC 1806 at Wikimedia Commons A Great Ball of Stars ESA Hubble Picture of the week nbsp This star cluster related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title NGC 1806 amp oldid 1196840157, wikipedia, wiki, book, books, library,
