brightness curve

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• Curve (tonality) — Photo and curve dialog in the GIMP Photo and curve …   Wikipedia

• Galaxy rotation curve — The rotation curve of a galaxy can be represented by a graph that plots the orbital velocity of the stars or gas in the galaxy on the y axis against the distance from the center of the galaxy on the x axis. Stars revolve around the center of… …   Wikipedia

• Kruithof curve — Named after the Dutch engineer Arie Andries Kruithof, [cite web|first=Arie Andries|last=Kruithof|url=http://dap.library.uu.nl/cgi bin/dap/dap?diss id=7789|title=Aanslag van het waterstofmolecuulspectrum door electronen|month=December 12|year=1934 …   Wikipedia

• Low surface brightness galaxy — A low surface brightness galaxy or LSB galaxy is a diffuse galaxy with a surface brightness that, when viewed from Earth, is at least one magnitude lower than the ambient night sky.Most LSBs are dwarf galaxies, in which most of their baryonic… …   Wikipedia

• light curve — Astron. a graph showing variations in brightness of celestial objects over time. [1885 90] * * * ▪ astronomy       in astronomy, graph of the changes in brightness with time of a star, particularly of the variable type. The light curves of… …   Universalium

• Weighting curve — A Weighting curve is a graph of a set of factors, that are used to weight measured values of a variable according to their importance in relation to some outcome. The most commonly known example is frequency weighting in sound level measurement… …   Wikipedia

• light curve — noun : a curve expressing graphically the fluctuations in light of a variable star or other astronomical body (as a planet or asteroid) * * * Astron. a graph showing variations in brightness of celestial objects over time. [1885 90] * * * light… …   Useful english dictionary

• light curve — noun Date: 1890 a graph showing the variation in brightness of a celestial object (as a variable star) over a period of time …   New Collegiate Dictionary

• Subdwarf B star — The subdwarf B star is a kind of subdwarf star with spectral type B. They are from the extreme horizontal branch stars of the Hertzsprung Russell diagram. These stars represent a late stage in the evolution of some stars, caused when a red giant… …   Wikipedia

• Variable star — A star is classified as variable if its apparent brightness as seen from Earth changes over time, whether the changes are due to variations in the star s actual luminosity, or to variations in the amount of the star s light that is blocked from… …   Wikipedia

• cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …   Universalium