Malmquist's namesake bias seeks to explain the selection of luminous objects when this quantityis large.
Malmquist's namesake bias seeks to explain the selection of luminous objects when this quantityis large. De Vaucouleurs' law states that the surface brightness of an elliptical galaxy is related to thequartic root of this quantity. This quantity can be computed for an object of known period via theperiod-luminosity relationship developed by Henrietta Swan Leavitt. Its namesake (*) modulus iscalculated from the difference of the apparent and absolute known brightness of a star. Standard candles areobjects of known brightness that can be used to calculate this quantity. Both absolute and apparent visualmagnitudes normalize this quantity, which can be measured in parsecs. For 10 points, name thisastronomical quantity that can be measured in light years.
Malmquist's namesake bias seeks to explain the selection of luminous objects when this quantityis large.
distance [accept reasonable equivalents, i.e. how far away something is]