metal deficient stars

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• Vytautas Straižys — (born August 20 1936) is a Lithuanian astronomer. In 1963 1965 he and his collaborators created and developed the Vilnius photometric system a seven color intermediate band system, optimized for photometric stellar classification. In 1996 he was… …   Wikipedia

• 82 Eridani — Starbox begin name=82 Eridani Starbox observe epoch=J2000 constell=Eridanus ra=RA|03|19|55.6505cite web url=http://simbad3.u strasbg.fr/sim id.pl?protocol=html Ident=HD+20794 title=SIMBAD Query Result: HD 20794 High proper motion Star… …   Wikipedia

• Tau Ceti — Starbox begin name=Tau Ceti Starbox image caption=Tau Ceti (highlighted center) in the southern part of the constellation Cetus. Starbox observe epoch=J2000 constell=Cetus ra=RA|01|44|04.0829cite web url=http://simbad3.u strasbg.fr/sim… …   Wikipedia

• GG Lupi — A/B Constelación Lupus Ascensión recta α 15h 18min 56,37s Declinación δ 40º 47’ 17,6’’ Distancia …   Wikipedia Español

• HE0107-5240 — Starbox begin name=HE0107 5240 Starbox observe epoch=J2000.0 (ICRS) constell=Phoenix ra=RA|01|09|29.1 [http://adsabs.harvard.edu/abs/2003AcA....53..133U The Optical Gravitational Lensing Experiment. Additional Planetary and Low Luminosity Object… …   Wikipedia

• Gamma ray burst — [ GRB 990123 taken on January 23, 1999. The burst is seen as a bright dot denoted by a square on the left, with an enlarged cutout on the right. The object above it with the finger like filaments is the originating galaxy. This galaxy seems to be …   Wikipedia

• Fomalhaut — This article is about the star. For the extrasolar planet, see Fomalhaut b. Fomalhaut Debris ring around Fomalhaut showing location of planet Fomalhaut b imaged by Hubble Space Telescope s coronagraph …   Wikipedia

• Model photosphere — Some essential steps in model atmosphere analysis for determining stellar abundances (Figure by Bengt Gustafsson, Astronomical Observatory, Uppsala). The photosphere denotes those solar or stellar surface layers from which optical radiation… …   Wikipedia

• 9 Pegasi — Constelación Pegaso Ascensión recta α 21h 44min 30,7s Declinación δ +17º 21’ 00’’ Distancia 923 ± 59 …   Wikipedia Español

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

• Zinc — This article is about the metallic element. For other uses, see Zinc (disambiguation). copper ← zinc → gallium ↑ Zn ↓ Cd …   Wikipedia