We have found a relationship between radius, luminosity, and surface brightness for galaxies in each of the clusters. A dependence of the zero point of the relation with the local projected density of galaxies i
Specifically , luminosity is proportional to radius squared . 具体来说,恒星的光度与温度的四次方呈正比。 Specifically , the luminosity of a star is proportional to temperature to the fourth power . 原理上,我们可以通过观测所谓的标准烛光(一种天体,它的绝对光度是相同的)来追溯宇宙内的历史。 In princi...
In physics, intensity refers to a fraction with the power output of the source at the numerator and the surface area where the quantity propagates as the denominator. Answer and Explanation: The brightness of the light can be correlated by using its intensity. Let us assume th...
Bend radius: 0.25'' Life time: 25,000 hours Size:210*148mm Capacitance: 2-5nF/sq.in Applied frequency: 400-1200Hz Operating temperature: -30°c~80°c Operating humidity:0-90% Storage temperature: -40°c~85°c Operating current(100V/400Hz): 1.5~2.5mA/sq.in ...
Luminosity: In astronomy, luminosity is the measure of the light energy radiated by the object into space per unit of time. The luminosity of a star depends on its size and its temperature. The greater the luminosity of an object is, the...
galaxies have ever larger mass discrepancies. No other parameter (luminosity, size, velocity, morphology) is so well correlated with the magnitude of the mass deficit. The rotation curves of low surface brightness disks thus provide a unique data set ...
They have found a relationship between radius, luminosity and surface brightness for galaxies in each of the clusters. Moreover, it seems that there is a dependence of the zero point of the relation with environment. This relationship implies that there is not a universal luminosity profile for ...
A change in the stellar radius due to strong and variable magnetic fields during activity cycles likely plays a role in explaining the anomalous brightness and luminosity of our three targets. At least for IL Hya, a radius change of about 9% is suggested from m_bol and T_eff, and is ...
A star of radius 500,000 km has a surface temperature of 5000 K. What is the wavelength in meters of the maximum radiation? What is the luminosity of the star in J/s? How far away must you be from a 650-kHz ...