the brightness of a star is dependant on its temperature and radius.
however, while a star is burning hydrogen into helium (which all stars do for most of their lifespan and it's usually this kind of object we mean when we say "star") a correlation does exist between the mass of the star and its luminosity (brightness)
No. Stars vary greatly in size and brightness.
Mass generally increases along the main sequence from low-mass stars like red dwarfs to high-mass stars like blue giants. This means that stars that are more massive are typically hotter, larger, and brighter than low-mass stars. Mass is a key factor that determines a star's temperature, luminosity, and lifetime.
No. Stars vary in lots of aspects, including:* Diameter * Mass * Color (and the related surface temperature) * Chemical composition * Density (related to mass and diameter) * Brightness
Variable stars and main sequence stars can have similar brightness. Variable stars, like Cepheid variables, can fluctuate in brightness over time, while main sequence stars maintain a relatively stable brightness due to their fusion processes.
A star's brightness is known as its magnitude. Stars with lower magnitude numbers are brighter than stars with a higher magnitude number.
Brightness, Color and mass
No. Stars vary greatly in size and brightness.
Two stars revolving around one another (around their center of mass, to be precise) are called a "binary star". There is no special name for the case that the brightness is unequal; this is actually the usual case.
Mass generally increases along the main sequence from low-mass stars like red dwarfs to high-mass stars like blue giants. This means that stars that are more massive are typically hotter, larger, and brighter than low-mass stars. Mass is a key factor that determines a star's temperature, luminosity, and lifetime.
No. Stars vary in lots of aspects, including:* Diameter * Mass * Color (and the related surface temperature) * Chemical composition * Density (related to mass and diameter) * Brightness
To do so, astronomers calculate the brightness of stars as they would appear if it were 32.6 light-years, or 10 parsecs from Earth. Another measure of brightness is luminosity, which is the power of a star - the amount of energy (light) that a star emits from its surface.
Yes! Some stars are supergiants, which means that they are high-mass stars. They explode in a supernova towards the end of their life. These stars are generally brighter than others. A star's brightness also depends on its temperature. Red stars are the coolest temperature, followed by orange, yellow, white and blue stars.
Variable stars and main sequence stars can have similar brightness. Variable stars, like Cepheid variables, can fluctuate in brightness over time, while main sequence stars maintain a relatively stable brightness due to their fusion processes.
A star's brightness is known as its magnitude. Stars with lower magnitude numbers are brighter than stars with a higher magnitude number.
While stars share similarities in that they are massive, luminous celestial bodies fueled by nuclear fusion, their temperatures and brightness can vary greatly. Stars can range in temperature from thousands to millions of degrees Kelvin, affecting their color and spectral characteristics. Similarly, their brightness, or luminosity, is influenced by factors such as size, mass, and stage of evolution. Therefore, not all stars are similar in terms of temperature and brightness.
The size of stars depends on their mass and the stage of their life cycle. Constellations are just stars which happen to lie in the same general direction from Earth, and have nothing really to do with each other. Apparent brightess of a star or galaxy is the result of its intrinsic brightness and its distance from us.
Temperature of stars is indicated by their color, with blue stars being hotter than red stars. Brightness of stars is indicated by their luminosity, which is how much light a star emits.