barium stars

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• Barium star — Barium stars are G to K class giants, whose spectra indicate an overabundance of s process elements by the presence of singly ionized barium, Ba II, at λ 455.4nm. Barium stars also show enhanced spectral features of carbon, the bands of the… …   Wikipedia

• List of most massive stars — This is a list of the most massive stars so far discovered. The list is ordered by solar mass (1 solar mass = the mass of Earth s Sun). Stellar mass is the most important attribute of a star. Combined with chemical compositions, mass determines a …   Wikipedia

• List of nearest stars — Artist s conception of a red dwarf star, the most common type of star in the Sun s stellar neighborhood, and in the universe. Although termed a red dwarf, the surface temperature of this star would give it an orange hue when viewed from close… …   Wikipedia

• List of most luminous stars — Below is a list of stars arranged in order of decreasing luminosity (increasing bolometric magnitude). Accurate measurement of stellar luminosities is quite difficult in practice, even when the apparent magnitude is measured accurately, for three …   Wikipedia

• List of proper names of stars — This is a list of proper names for stars, mostly derived from Arabic and Latin. See also the list of stars by constellation, which gives variant names, derivations, and magnitudes. Of the roughly 10,000 stars visible to the naked eye, only few… …   Wikipedia

• Carbon star — A carbon star is a late type star similar to a red giant (or occasionally to a red dwarf) whose atmosphere contains more carbon than oxygen; the two elements combine in the upper layers of the star, forming carbon monoxide, which consumes all the …   Wikipedia

• Étoile à baryum — Une étoile à baryum est une géante rouge de type spectral G ou K dont le spectre indique une surabondance d éléments chimiques issus du processus S à travers la présence de la raie Ba II à λ = 455,4 nm du baryum ionisé une fois Ba+. Ces… …   Wikipédia en Français

• Alphard — For the programming language, see Alphard (programming language). For the vehicle, see Toyota Alphard. Alpha Hydrae Alphard is the α star in the constellation of Hydra …   Wikipedia

• Peculiar star — In astrophysics, peculiar stars have distinctly unusual metal abundances, at least in their surface layers. Chemically peculiar stars (CP stars) are common among hot main sequence (hydrogen burning) stars. These hot peculiar stars have been… …   Wikipedia

• HD 13551 — Constelación Hydrus Ascensión recta α 02h 18min 08.3s Declinación δ 60º 45’ 29’’ Distancia …   Wikipedia Español

• Astronomical object — Celestial object and Celestial body redirect here. For other uses, see Celestial (disambiguation). This article is about naturally occurring objects. For artificial objects, see Satellite. Astronomical objects or celestial objects are naturally… …   Wikipedia