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- BPM_37093 abstract "BPM 37093 (V886 Centauri) is a variable white dwarf star of the DAV, or ZZ Ceti, type, with a hydrogen atmosphere and an unusually high mass of approximately 1.1 times the Sun's. It is about 50 light-years from Earth, in the constellation Centaurus, and vibrates; these pulsations cause its luminosity to vary. Like other white dwarfs, BPM 37093 is thought to be composed primarily of carbon and oxygen, which are created by thermonuclear fusion of helium nuclei in the triple-alpha process.In the 1960s, it was predicted that as a white dwarf cools, its material should crystallize, starting at the center. When a star pulsates, observing its pulsations gives information about its structure. BPM 37093 was first observed to be a pulsating variable in 1992, and in 1995 it was pointed out that this yielded a potential test of the crystallization theory. In 2004, Antonio Kanaan and a team of researchers of the Whole Earth Telescope estimated, on the basis of these asteroseismological observations, that approximately 90% of the mass of BPM 37093 had crystallized. Other work gives a crystallized mass fraction of between 32% and 82%. Any of these estimates would result in a total crystalline mass in excess of 5×1029 kilograms.Crystallization of the material of a white dwarf of this type is thought to result in a body-centered cubic lattice of carbon and/or oxygen nuclei, which are surrounded by a Fermi sea of electrons.".
- BPM_37093 thumbnail Lattice_body_centered_cubic.svg?width=300.
- BPM_37093 wikiPageExternalLink 103178-largest_diamond-0.
- BPM_37093 wikiPageExternalLink bpm-37093.shtml.
- BPM_37093 wikiPageID "469673".
- BPM_37093 wikiPageRevisionID "605176497".
- BPM_37093 appmagV "14".
- BPM_37093 class "DAV4.4".
- BPM_37093 constell Centaurus.
- BPM_37093 epoch "J2000.0".
- BPM_37093 gravity "8.81".
- BPM_37093 luminosity "0.001".
- BPM_37093 mass "1.1".
- BPM_37093 pError "9.4".
- BPM_37093 parallax "61".
- BPM_37093 radialV "−12".
- BPM_37093 temperature "11730".
- BPM_37093 variable "DAV".
- BPM_37093 subject Category:Centaurus_(constellation).
- BPM_37093 subject Category:Objects_named_with_variable_star_designations.
- BPM_37093 subject Category:Pulsating_white_dwarfs.
- BPM_37093 type CelestialBody.
- BPM_37093 type Star.
- BPM_37093 type PhysicalBody.
- BPM_37093 comment "BPM 37093 (V886 Centauri) is a variable white dwarf star of the DAV, or ZZ Ceti, type, with a hydrogen atmosphere and an unusually high mass of approximately 1.1 times the Sun's. It is about 50 light-years from Earth, in the constellation Centaurus, and vibrates; these pulsations cause its luminosity to vary.".
- BPM_37093 label "BPM 37093".
- BPM_37093 label "BPM 37093".
- BPM_37093 label "BPM 37093".
- BPM_37093 label "BPM 37093".
- BPM_37093 label "BPM 37093".
- BPM_37093 label "BPM 37093".
- BPM_37093 label "BPM 37093".
- BPM_37093 label "BPM 37093".
- BPM_37093 sameAs BPM_37093.
- BPM_37093 sameAs BPM_37093.
- BPM_37093 sameAs BPM_37093.
- BPM_37093 sameAs BPM_37093.
- BPM_37093 sameAs BPM_37093.
- BPM_37093 sameAs BPM_37093.
- BPM_37093 sameAs BPM_37093.
- BPM_37093 sameAs m.02d9tf.
- BPM_37093 sameAs Q692608.
- BPM_37093 sameAs Q692608.
- BPM_37093 wasDerivedFrom BPM_37093?oldid=605176497.
- BPM_37093 depiction Lattice_body_centered_cubic.svg.
- BPM_37093 isPrimaryTopicOf BPM_37093.