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HE 2359-2844

From Wikipedia, the free encyclopedia

HE 2359-2844
Observation data
Epoch J2000      Equinox J2000
Constellation Sculptor
Right ascension +00h 01m 38.4850s[1]
Declination −28° 27′ 43.034″[1]
Apparent magnitude (V) 16.14[1]
Distance800 ly
(250 pc)
Spectral typesdO7 He2[1]
Other designations
HE 2359-2844, CTLGM 5978, MCT 2359-2844, PHL 629, Ton S 133[1]
Database references
SIMBADdata

HE 2359-2844 is a subdwarf located approximately 800 light years away in the constellation Sculptor, with a surface temperature of approximately 38,000 °C (68,400 °F). Along with stars HE 1256-2738 and LS IV-14 116, HE 2359-2844 forms a new group of star called heavy metal subdwarfs.[2]

HE 2359-2844 contains very high levels of lead - 10,000 times more than the Sun. It also contains 10,000 times more yttrium and zirconium than the Sun. It is suggested that there is a lead layer above the star that is 100 km (62 mi) thick and that contains 100 billion tonnes of lead.[3] Dr. Naslim Neelamkodan explained that "the heavy-metal stars are a crucial link between bright red giants, stars thirty or forty times the size of the Sun, and faint blue subdwarfs, stars one fifth the size, but seven times hotter and seventy times brighter than the Sun."[2][4]

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Transcription

References

  1. ^ a b c d e "HE 2359-2844". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 17 January 2017.
  2. ^ a b "Astronomers Discover Two Heavy Metal Stars". Science News. August 2, 2013. Retrieved November 5, 2016.
  3. ^ "Under leaden skies: Where heavy metal clouds the stars". Science Daily. August 1, 2013. Retrieved November 5, 2016.
  4. ^ "ScienceShot: Stars of Heavy Metal". Science. August 1, 2013. Retrieved November 5, 2016.
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This page was last edited on 13 June 2022, at 10:47
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