horizontal branch stars

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• Horizontal branch — The horizontal branch (HB) is a stage of stellar evolution which immediately follows the red giant branch in stars whose masses are similar to the Sun s. Horizontal branch stars are powered by helium fusion in the core (via the triple alpha… …   Wikipedia

• Asymptotic giant branch — The asymptotic giant branch is the region of the Hertzsprung Russell diagram populated by evolving low to medium mass stars. This is a period of stellar evolution undertaken by all low to intermediate mass stars (0.6 10 solar masses) late in… …   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 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 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

• List of astronomy acronyms — This is a compilation of acronyms commonly used in astronomy. Most of the acronyms are drawn from professional astronomy and are used quite frequently in scientific publications. However, a few of these acronyms are frequently used by the general …   Wikipedia

• Draco Dwarf — Central part of Draco Dwarf by HST Observation data (J2000 epoch) Constellation …   Wikipedia

• NGC 5466 — by Hubble Space Telescope; 3.5′ view. Credit: NASA/STScI/WikiSky Observation data (J2000 epoch) …   Wikipedia

• Andromeda II — Infobox Galaxy name = Andromeda II epoch = J2000 type = dSphcite web title=NASA/IPAC Extragalactic Database work=Results for Andromeda II url=http://nedwww.ipac.caltech.edu/ accessdate=2006 11 29 ] ra = RA|01|16|29.8 dec = DEC|+33|25|09 dist ly …   Wikipedia

• Andromeda I — Infobox Galaxy name = Andromeda I epoch = J2000 type = E3 pec?cite web title=NASA/IPAC Extragalactic Database work=Results for Andromeda I url=http://nedwww.ipac.caltech.edu/ accessdate=2008 01 21 ] ra = RA|00|45|39.8 dec = DEC|+38|02|28 dist ly …   Wikipedia