outer radiation zone
41Instability strip — The Instability strip is a nearly vertical region in the Hertzsprung–Russell diagram which is occupied by pulsating variable stars (including RR Lyrae variable, Cepheid variable, W Virginis variable, ZZ Ceti variable, RV Tauri variable, Delta… …
42Solar mass — Weight of the Sun redirects here. For the song, see Tao of the Dead. Size and mass of very large stars: Most massive example, the blue Pistol Star (150 ). Others are Rho Cassiopeiae (40 …
43Multiple 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… …
44Star 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]… …
45Stellar atmosphere — The stellar atmosphere is the outer region of the volume of a star, lying above the stellar core, radiation zone and convection zone. It is divided into several regions of distinct character:The photosphere, which is the lowest and coolest part… …
46Giant star — Hertzsprung–Russell Diagram Spectral Type Bro …
47Sphere (disambiguation) — A sphere is an object shaped like the surface of a ball, but can be used to refer to a ball shaped object, as well as a sphere like or annular region or shell. Additionally, it has several metaphorical uses.In mathematics: * Sphere, the set of… …
48Metallicity — The globular cluster M80. Stars in globular clusters are mainly older metal poor members of Population II. In astronomy and physical cosmology, the metallicity (also called Z[1]) of an object is the proportion of its matter made …
49Peculiar 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… …
50sun — sunlike, adj. /sun/, n., v., sunned, sunning. n. 1. (often cap.) the star that is the central body of the solar system, around which the planets revolve and from which they receive light and heat: its mean distance from the earth is about 93… …
