barium star

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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

• Star — For other uses, see Star (disambiguation) …   Wikipedia

• Star designation — Designations of stars (and other celestial bodies) are done by the International Astronomical Union (IAU). Many of the star names in use today were inherited from the time before the IAU existed. Other names, mainly for variable stars (including… …   Wikipedia

• Star system — This article is about stars in outer space. For the Hollywood star system, see Star system (film). For a system of planets around a star, see Planetary system. A star system or stellar system is a small number of stars which orbit each other,[1]… …   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

• 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

• Am star — An Am star or metallic line star is a type of chemically peculiar star of spectral type A whose spectrum has strong and often variable absorption lines of metals such as zinc, strontium, zirconium, and barium, and deficiencies of others, such as… …   Wikipedia

• Neutron star — redirects here. For the story by Larry Niven, see Neutron Star (short story). Neutron stars crush half a million times more mass than Earth into a sphere no larger than Manhattan. A neutron star is a type of stellar remnant that can result from… …   Wikipedia

• Binary star — For the hip hop group, see Binary Star (band). Hubble image of the …   Wikipedia

• Compact star — In astronomy, the term compact star (sometimes compact object) is used to refer collectively to white dwarfs, neutron stars, other exotic dense stars, and black holes. These objects are all small for their mass. The term compact star is often… …   Wikipedia

• Multiple star — Artist s impression of the orbits of HD 188753, a triple star system A multiple star consists of three or more stars which appear from the Earth to be close to one another in the sky. This may result from the stars being physically close and… …   Wikipedia