light curve

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light curve

A graph of the brightness of a variable star or other variable object plotted against time, the brightness usually being expressed in terms of apparent or absolute magnitude. Different types of variable star can be distinguished by the shape of the curve; the period of the variable is one complete oscillation in brightness. The light curve of an eclipsing binary has two minima: a shallower one (the secondary minimum) and a deeper one (the primary minimum), which occurs when the brighter star is eclipsed. The minimum has a flat base if the eclipse is total or annular.

light curve

[′līt ‚kərv]
(astrophysics)
A graph showing the variations in brightness of a celestial object; the stellar magnitude is usually shown on the vertical axis, and time is the horizontal coordinate.
References in periodicals archive ?
By doing so, they were able to reproduce light curves over the images to represent a prolonged view of the planet.
"Kelly Beatty replies: A few fast spinning asteroids do have light curves as dramatic as 'Oumuamua's, so it's not impossible that a solid natural, rocky object would have that shape.
Researchers used existing tools developed at MIT to analyze the light curves from 50,000 stars from recent Kepler scans.
The air lower down is denser, and light curves in these conditions, bending around the bend of the Earth's surface as it travels - so buildings in places like Ilfracombe are visible in Swansea, etc.
To obtain the precise MSL, we first fitted a middle sagittal plane in 3D Euclidean space through a set of edge segments of light curves using least-squares fitting approach.
Tenders are invited for Replacement Of Ac Ridge & Ac North Light Curves In Various Section In Non Filling Area At Ofk.
Some specific topics explored include the supermassive black hole in the Milky Way, optical to near-infrared light curves of classical Cepheids, young stellar objects in the large Magellanic cloud, dwarf Cepheids in the Carina Dwarf Spheroidal Galaxy, and helium in the Galactic bulge.
Measurements of the brightness of individual stars are, over years, assembled into light curves - plots of brightness against time.
Over many years, the cameras have recorded the brightness of individual stars and plotted their movements into light curves.
After that, the rapid light curves were measured using a preinstalled software routine, where the actinic illumination was incremented in 10 steps from 5 to 1303 [micro]molx[m.sup.-2]x[s.sup.-1], 30 s for each level.
Caption: A beam of light curves around a tiny glass sphere embedded in plastic.
"Here we report the detection of two superluminous supernovae that have slowly evolving light curves," the paper quoted Dr Cooke, of Swinburne University of Technology in Melbourne, as saying.