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- Sneden's_Star abstract "BPS CS22892-0052 (Sneden's Star) is an old population II star located at a distance of 4.7 kpc in the galactic halo. It belongs to a class of ultra-metal-poor stars (Metallicity [Fe/H]=-3.1), especially the very rare subclass of neutron-capture (r-process) enhanced stars. It was discovered by Tim C. Beers and collaborators with the Curtis Schmidt telescope at the Cerro Tololo Inter-American Observatory in Chile. Extended high-resolution spectroscopic observations since around 1995 (with Chris Sneden from the University of Texas at Austin as the leading observer) allowed observers to determine the abundances of 53 chemical elements in this star, as of December 2005 only second in number to the Sun.From barium (Z=56) on, all elements show the pattern of the r-process contribution to the abundances of the elements in the Solar System. Comparing the observed abundances for a stable element such as europium (Z=63) and the radioactive element thorium (Z=90) to calculated abundances of an r-process in a type II supernova explosion (as from the universities at Mainz and Basel groups of Karl-Ludwig Kratz and Friedrich-Karl Thielemann) allowed observers to determine the age of this star to about 13 billion years. Similar ages have been derived for other ultra-metal-poor stars (CS31082-001, BD +17° 3248 and HE 1523-0901) from thorium-to-uranium ratios.".
- Sneden's_Star wikiPageExternalLink AladinPreview?-c=22+17+01.50-16+39+26.0&ident=BPS+CS+22892-0052&submit=Aladin+previewer.
- Sneden's_Star wikiPageExternalLink ages.html.
- Sneden's_Star wikiPageExternalLink cs228.html.
- Sneden's_Star wikiPageID "3452403".
- Sneden's_Star wikiPageRevisionID "594846883".
- Sneden's_Star absmagV "13.99".
- Sneden's_Star age "?".
- Sneden's_Star appmagV "13.2".
- Sneden's_Star class "KIIvw D, Carbon Star".
- Sneden's_Star constell Aquarius_(constellation).
- Sneden's_Star dec "-16".
- Sneden's_Star epoch "J2000".
- Sneden's_Star hasPhotoCollection Sneden's_Star.
- Sneden's_Star luminosity "4".
- Sneden's_Star mass "8".
- Sneden's_Star metal "-3.1".
- Sneden's_Star ra "80221.5".
- Sneden's_Star radialV "-75".
- Sneden's_Star radius "9".
- Sneden's_Star simbad "BPS+CS22892-0052".
- Sneden's_Star temperature "3500".
- Sneden's_Star subject Category:Aquarius_(constellation).
- Sneden's_Star subject Category:C-type_stars.
- Sneden's_Star subject Category:Population_II_stars.
- Sneden's_Star type C-typeStars.
- Sneden's_Star type CelestialBody109239740.
- Sneden's_Star type NaturalObject100019128.
- Sneden's_Star type Object100002684.
- Sneden's_Star type PhysicalEntity100001930.
- Sneden's_Star type PopulationIIStars.
- Sneden's_Star type Star109444100.
- Sneden's_Star type Whole100003553.
- Sneden's_Star type CelestialBody.
- Sneden's_Star type Star.
- Sneden's_Star type PhysicalBody.
- Sneden's_Star comment "BPS CS22892-0052 (Sneden's Star) is an old population II star located at a distance of 4.7 kpc in the galactic halo. It belongs to a class of ultra-metal-poor stars (Metallicity [Fe/H]=-3.1), especially the very rare subclass of neutron-capture (r-process) enhanced stars. It was discovered by Tim C. Beers and collaborators with the Curtis Schmidt telescope at the Cerro Tololo Inter-American Observatory in Chile.".
- Sneden's_Star label "BPS CS22892-052".
- Sneden's_Star label "Sneden's Star".
- Sneden's_Star sameAs BPS_CS22892-052.
- Sneden's_Star sameAs BPS_CS22892-0052.
- Sneden's_Star sameAs m.09d6wb.
- Sneden's_Star sameAs Q796881.
- Sneden's_Star sameAs Q796881.
- Sneden's_Star sameAs Sneden's_Star.
- Sneden's_Star wasDerivedFrom Sneden's_Star?oldid=594846883.
- Sneden's_Star isPrimaryTopicOf Sneden's_Star.
- Sneden's_Star name "BPS CS22892-0052".