HD 140283: A STAR IN THE SOLAR NEIGHBORHOOD THAT FORMED SHORTLY AFTER THE BIG BANG

HD 140283 is an extremely metal-deficient and high-velocity subgiant in the solar neighborhood, having a location in the Hertzsprung-Russell diagram where absolute magnitude is most sensitive to stellar age. Because it is bright, nearby, unreddened, and has a well-determined chemical composition, th...

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Veröffentlicht in:	Astrophysical journal. Letters 2013-03, Vol.765 (1), p.1-5
Hauptverfasser:	Bond, Howard E, Nelan, Edmund P, Vandenberg, Don A, Schaefer, Gail H, Harmer, Dianne
Format:	Artikel
Sprache:	eng
Schlagworte:	ABUNDANCE Age ASTROPHYSICS, COSMOLOGY AND ASTRONOMY CHEMICAL COMPOSITION DIFFUSION ERRORS HELIUM HERTZSPRUNG-RUSSELL DIAGRAM Hubble Space Telescope IRON MICROWAVE RADIATION NUCLEAR REACTIONS OXYGEN Parallax SENSORS Solar neighborhood SPACE STAR EVOLUTION STARS Stellar age SURFACES TELESCOPES Uncertainty UNIVERSE
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