White dwarfs - The once and future suns

Details White dwarfs - The once and future suns White dwarfs - The once and future suns

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986s%26t....72..348t&link_type=abstract

Sky and Telescope (ISSN 0037-6604), vol. 72, Oct. 1986, p. 348-353.

Astronomy and Astrophysics

Astrophysics

Astrophysics, Stellar Evolution, White Dwarf Stars, Binary Stars, Hertzsprung-Russell Diagram, Line Spectra, Stellar Magnetic Fields, Stellar Spectra

Scientific paper

The history and properties of white dwarfs (Bessel's conclusion that Sirius and Procyon have invisible companions, Clark's discovery of Sirius B, Adams and Russell's study of white dwarf spectra, Chandrasekhar's explanation of white dwarf structure by equations incorporating quantum mechanics and relativity) are treated. Formation of white dwarfs, degeneracy, binary white dwarfs (and novae and supernovae) are explained. A mystery nearly 50 years old regarding the spectrum of the star Greenwich +70 degrees-8247 has been solved: it involves a stationary line phenomenon and a magnetic field of 300-500 million gauss. Processes being studied in white dwarfs and white dwarf models include gravitational settling, accretion, dredge-up, radiation pressure, and diffusive hydrogen burning.

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