The lower end of the main sequence

Details The lower end of the main sequence The lower end of the main sequence

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982s%26w....21..415s&link_type=abstract

Sterne und Weltraum, vol. 21, Oct. 1982, p. 415-417. In German.

Physics

Gravitational Collapse, Light Curve, Main Sequence Stars, Nuclear Reactions, Red Dwarf Stars, Stellar Temperature, Stellar Evolution, Stellar Mass, Stellar Models

Scientific paper

Red and black dwarfs are discussed. The apparent decrease in relative number of red dwarfs with distance from the sun is probably due to the difficulty in observing them. Red dwarfs are of such low temperature that nuclear reactions cannot proceed in their cores, and they emit radiation by contracting and generating gravitational energy. Dwarfs of 0.085 solar mass or more eventually reach the main sequence as their degenerate cores become able to sustain nuclear reactions. Stars of lower mass contract until gravitation is balanced by the pressure of the gas of degenerate electrons. From that point, they cool until they become black dwarfs. A theoretical light curve for red dwarfs and prospective black dwarfs is shown.

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