Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/SDSS_J102915+172927> ?p ?o }
Showing triples 1 to 67 of
67
with 100 triples per page.
- SDSS_J102915+172927 abstract "SDSS J102915+172927 or Caffau's star is a population II star in the galactic halo, seen in the constellation Leo. It is about 13 billion years old, making it one of the oldest stars in the Galaxy. At the time of its discovery, it had the lowest metallicity of any known star. It is small (less than 0.8 solar masses), deficient in carbon, nitrogen, oxygen, and completely devoid of lithium. Because carbon and oxygen provide a fine structure cooling mechanism that is critical in the formation of low-mass stars, the origins of Caffau's star are somewhat mysterious. It has been suggested, both for theoretical and observational reasons, that the formation of low-mass stars in the interstellar medium requires a critical metallicity somewhere between 1.5×10−8 and 1.5×10−6. The metallicity of Caffau's star is less than 6.9×10−7. According to Schneider et al., cooling by dust rather than the fine structure lines of CII and OI may have enabled the creation of such low-mass, metal-poor stars in the early universe. The absence of lithium implies past temperatures of at least two million Kelvins.The star was described by Elisabetta Caffau et al. in an article published by the journal Nature in September 2011. Caffau had been searching for extremely metal-poor stars for the past ten years. It was identified by automated software which analyzed data from the Sloan Digital Sky Survey. This was followed up by observations with the X-shooter and UVES instruments on the Very Large Telescope in Chile. Caffau and her team expect to find between five and fifty similar stars with the telescope in the future.".
- SDSS_J102915+172927 thumbnail SDSS_J102915_172927.jpg?width=300.
- SDSS_J102915+172927 wikiPageID "36770904".
- SDSS_J102915+172927 wikiPageLength "4480".
- SDSS_J102915+172927 wikiPageOutDegree "25".
- SDSS_J102915+172927 wikiPageRevisionID "660936317".
- SDSS_J102915+172927 wikiPageWikiLink Carbon.
- SDSS_J102915+172927 wikiPageWikiLink Category:Astronomical_objects_discovered_in_2011.
- SDSS_J102915+172927 wikiPageWikiLink Category:Leo_(constellation).
- SDSS_J102915+172927 wikiPageWikiLink Category:Population_II_stars.
- SDSS_J102915+172927 wikiPageWikiLink Cayrels_Star.
- SDSS_J102915+172927 wikiPageWikiLink Epoch_(astronomy).
- SDSS_J102915+172927 wikiPageWikiLink Galactic_halo.
- SDSS_J102915+172927 wikiPageWikiLink HE0107-5240.
- SDSS_J102915+172927 wikiPageWikiLink HE_1327-2326.
- SDSS_J102915+172927 wikiPageWikiLink Interstellar_medium.
- SDSS_J102915+172927 wikiPageWikiLink Leo_(constellation).
- SDSS_J102915+172927 wikiPageWikiLink Lithium.
- SDSS_J102915+172927 wikiPageWikiLink Metallicity.
- SDSS_J102915+172927 wikiPageWikiLink Nature_(journal).
- SDSS_J102915+172927 wikiPageWikiLink Nitrogen.
- SDSS_J102915+172927 wikiPageWikiLink Nucleosynthesis.
- SDSS_J102915+172927 wikiPageWikiLink Oxygen.
- SDSS_J102915+172927 wikiPageWikiLink Sloan_Digital_Sky_Survey.
- SDSS_J102915+172927 wikiPageWikiLink Solar_mass.
- SDSS_J102915+172927 wikiPageWikiLink Spite_plateau.
- SDSS_J102915+172927 wikiPageWikiLink Star.
- SDSS_J102915+172927 wikiPageWikiLink Very_Large_Telescope.
- SDSS_J102915+172927 wikiPageWikiLink File:SDSS_J102915_172927.jpg.
- SDSS_J102915+172927 wikiPageWikiLinkText "Caffau's star".
- SDSS_J102915+172927 wikiPageWikiLinkText "SDSS J102915+172927".
- SDSS_J102915+172927 appmagV "+16.92".
- SDSS_J102915+172927 constell Leo_(constellation).
- SDSS_J102915+172927 epoch Epoch_(astronomy).
- SDSS_J102915+172927 wikiPageUsesTemplate Template:DEC.
- SDSS_J102915+172927 wikiPageUsesTemplate Template:RA.
- SDSS_J102915+172927 wikiPageUsesTemplate Template:Reflist.
- SDSS_J102915+172927 wikiPageUsesTemplate Template:Starbox_begin.
- SDSS_J102915+172927 wikiPageUsesTemplate Template:Starbox_end.
- SDSS_J102915+172927 wikiPageUsesTemplate Template:Starbox_image.
- SDSS_J102915+172927 wikiPageUsesTemplate Template:Starbox_observe.
- SDSS_J102915+172927 wikiPageUsesTemplate Template:Stars_of_Leo.
- SDSS_J102915+172927 subject Category:Astronomical_objects_discovered_in_2011.
- SDSS_J102915+172927 subject Category:Leo_(constellation).
- SDSS_J102915+172927 subject Category:Population_II_stars.
- SDSS_J102915+172927 hypernym Star.
- SDSS_J102915+172927 type CelestialBody.
- SDSS_J102915+172927 type Place.
- SDSS_J102915+172927 type Star.
- SDSS_J102915+172927 type Object.
- SDSS_J102915+172927 type Location.
- SDSS_J102915+172927 type Place.
- SDSS_J102915+172927 type Thing.
- SDSS_J102915+172927 comment "SDSS J102915+172927 or Caffau's star is a population II star in the galactic halo, seen in the constellation Leo. It is about 13 billion years old, making it one of the oldest stars in the Galaxy. At the time of its discovery, it had the lowest metallicity of any known star. It is small (less than 0.8 solar masses), deficient in carbon, nitrogen, oxygen, and completely devoid of lithium.".
- SDSS_J102915+172927 label "SDSS J102915+172927".
- SDSS_J102915+172927 sameAs Q491497.
- SDSS_J102915+172927 sameAs SDSS_J102915+172927.
- SDSS_J102915+172927 sameAs SDSS_J102915+172927.
- SDSS_J102915+172927 sameAs SDSS_J102915+172927.
- SDSS_J102915+172927 sameAs SDSS_J102915+172927.
- SDSS_J102915+172927 sameAs m.0m0n8p2.
- SDSS_J102915+172927 sameAs Q491497.
- SDSS_J102915+172927 sameAs SDSS_J102915+172927.
- SDSS_J102915+172927 wasDerivedFrom SDSS_J102915+172927?oldid=660936317.
- SDSS_J102915+172927 depiction SDSS_J102915_172927.jpg.
- SDSS_J102915+172927 isPrimaryTopicOf SDSS_J102915+172927.
- SDSS_J102915+172927 name "SDSS J102915+172927".