HE 2359-2844
| Observation data EpochJ2000EquinoxJ2000 | |
|---|---|
| Constellation | Sculptor |
| Right ascension | +00h01m38.4850s[1] |
| Declination | −28° 27′ 43.034″[1] |
| Apparent magnitude(V) | 16.14[1] |
| Distance | 800ly (250pc) |
| Spectral type | sdO7 He2[1] |
| Other designations | |
HE 2359-2844, CTLGM 5978, MCT 2359-2844, PHL 629, Ton S 133[1] | |
| Database references | |
| SIMBAD | data |
HE 2359-2844is asubdwarflocated approximately 800light yearsaway in the constellationSculptor,with a surface temperature of approximately 38,000 °C (68,400 °F). Along with starsHE 1256-2738andLS IV-14 116,HE 2359-2844 forms a new group of star calledheavy metal subdwarfs.[2]
HE 2359-2844 contains very high levels oflead- 10,000 times more than theSun.It also contains 10,000 times moreyttriumandzirconiumthan 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]
References
[edit]- ^abcde"HE 2359-2844".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved17 January2017.
- ^ab"Astronomers Discover Two Heavy Metal Stars".Science News.August 2, 2013.RetrievedNovember 5,2016.
- ^"Under leaden skies: Where heavy metal clouds the stars".Science Daily.August 1, 2013.RetrievedNovember 5,2016.
- ^"ScienceShot: Stars of Heavy Metal".Science.August 1, 2013.RetrievedNovember 5,2016.
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