About: HD 122563

An Entity of Type: star, from Named Graph: http://dbpedia.org, within Data Space: dbpedia.org:8891

HD 122563 is an extremely metal-poor red giant star, and the brightest metal-poor star in the sky. Its low heavy element content was first recognized by spectroscopic analysis in 1963. For more than twenty years it was the most metal-poor star known, being more metal-poor than any known globular cluster, and it is the most accessible example of an extreme Population II or Halo star.

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dbo:abstract
  • HD 122563 is an extremely metal-poor red giant star, and the brightest metal-poor star in the sky. Its low heavy element content was first recognized by spectroscopic analysis in 1963. For more than twenty years it was the most metal-poor star known, being more metal-poor than any known globular cluster, and it is the most accessible example of an extreme Population II or Halo star. As the most extreme metal-poor star known, HD 122563's composition was crucial in constraining theories for galactic chemical evolution; in particular, its composition peculiarities provided signposts for understanding the accumulation of heavy elements by stellar nucleosynthesis in the Galaxy. For example, it has an excess of oxygen, [O/Fe] = +0.6, while the proportions of strontium, yttrium, zirconium, barium and the lanthanide elements suggest that the s-process has made no contribution to the material present in the star: in HD 122563, all these elements are products of the r-process instead. The implication is that the star formed at a time and place where there had not been enough time for any previous generation of stars to have produced s-process elements, though there was r-process material present. (en)
  • HD 122563 è una stella bianco-gialla nella sequenza principale di magnitudine 6,2 situata nella costellazione di Boote. Dista 867 anni luce dal sistema solare. (it)
  • HD 122563 är en gul jättestjärna i Björnvaktarens stjärnbild. Stjärnan har visuell magnitud +6,19 och är svagt synlig för blotta ögat vid mycket god seeing. (sv)
  • HD 122563，又名BD+10 2617，SAO 120251、HR 5270，是一颗恒星，视星等为6.2，位于銀經350.17，銀緯65.8，其B1900.0坐标为赤經13h 57m 37.4s，赤緯+10° 65.8′ 13″。 (zh)
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  • 1118717818 (xsd:integer)
dbo:wikiPageWikiLink
dbp:absmagV
  • –0.948 (en)
dbp:appmagV
  • 6.200000 (xsd:double)
dbp:bV
  • +0.90 (en)
dbp:class
  • G8:III: Fe-5 (en)
dbp:constell
dbp:epoch
  • J2000 (en)
dbp:gravity
  • 1.190000 (xsd:double)
dbp:metalFe
  • –2.65 (en)
dbp:pError
  • 0.063000 (xsd:double)
dbp:parallax
  • 3.444000 (xsd:double)
dbp:propMoDec
  • –69.67 (en)
dbp:propMoRa
  • –189.86 (en)
dbp:rI
  • 0.580000 (xsd:double)
dbp:radialV
  • –26.39 (en)
dbp:temperature
  • 4589 (xsd:integer)
dbp:uB
  • +0.38 (en)
dbp:vR
  • 0.500000 (xsd:double)
dbp:variable
  • Suspected (en)
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rdfs:comment
  • HD 122563 è una stella bianco-gialla nella sequenza principale di magnitudine 6,2 situata nella costellazione di Boote. Dista 867 anni luce dal sistema solare. (it)
  • HD 122563 är en gul jättestjärna i Björnvaktarens stjärnbild. Stjärnan har visuell magnitud +6,19 och är svagt synlig för blotta ögat vid mycket god seeing. (sv)
  • HD 122563，又名BD+10 2617，SAO 120251、HR 5270，是一颗恒星，视星等为6.2，位于銀經350.17，銀緯65.8，其B1900.0坐标为赤經13h 57m 37.4s，赤緯+10° 65.8′ 13″。 (zh)
  • HD 122563 is an extremely metal-poor red giant star, and the brightest metal-poor star in the sky. Its low heavy element content was first recognized by spectroscopic analysis in 1963. For more than twenty years it was the most metal-poor star known, being more metal-poor than any known globular cluster, and it is the most accessible example of an extreme Population II or Halo star. (en)
rdfs:label
  • HD 122563 (en)
  • HD 122563 (it)
  • HD 122563 (sv)
  • HD 122563 (zh)
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foaf:name
  • HD 122563 (en)
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