0
What else can I help you with?
Which changes would changes would correspond to a decrease in a star's absolute brightness?
A decrease in a star's absolute brightness could be caused by the star moving farther away from Earth, interstellar dust blocking some of its light, or a decrease in the star's temperature. All of these factors would result in less light reaching Earth, causing a decrease in the star's apparent brightness.
Do star color indicates the absolute distance?
No, the color of a star does not directly indicate its absolute distance. Star color is related to its surface temperature, and stars of different temperatures can be located at varying distances from Earth. The brightness of a star, as measured by its apparent magnitude, is more indicative of its distance.
What is the temp of high mass star?
Eta Carinae, with a mass 180 times that of the sun has a surface temperature of around 40,000 K. It is the hottest known star.
Which magnitude gives the most information about the physical nature of a star?
The luminosity of a star gives the most information about its physical nature. Luminosity is a measure of how much energy a star emits per unit of time and is directly related to its size, temperature, and distance. By knowing a star's luminosity, scientists can determine its mass, age, and evolutionary stage.
How can two supergiant stars have an absolute magnitude of -3 but one has a radius of 10 times the sun and the other 100 times the sun?
The absolute magnitude of a star depends on the size and temperature; a large cooler star can generate as much light as a small very hot star.
How does a star's temperature affect its absolute magnitude?
The absolute magnitude of a start will increase both:* If its surface temperature increases, and * If its diameter increases.
What kind of star has an absolute magnitude of 10 and a surface temperature of 20000 K?
This star would be a white dwarf, as it has a high surface temperature of 20000 K but a low absolute magnitude of 10. White dwarfs are small, dense remnants of low to medium mass stars that have exhausted their nuclear fuel and collapsed.
How diameter and absolute magnitude related?
the larger the mass of the star, the more luminous it is.
What determines the temperature in the core of a star?
The star's mass determines the temperature in its core. A stars mass will also determined it size and the amount of gravitational pull it will have.
What makes stars colors different?
A star's color is determined by its surface temperature. This temperature is largely dependent on the star's initial mass.
What would be the absolute magnitude and color of a main sequence star with a temperature of 25000K?
The absolute magnitude of a main sequence star with a temperature of 25,000K would depend on its luminosity, which is not provided in the question. However, at this temperature range, the star would appear blue-white in color, as it falls within the blue-white region of the stellar temperature-color relationship.
Which changes would changes would correspond to a decrease in a star's absolute brightness?
A decrease in a star's absolute brightness could be caused by the star moving farther away from Earth, interstellar dust blocking some of its light, or a decrease in the star's temperature. All of these factors would result in less light reaching Earth, causing a decrease in the star's apparent brightness.
What is the temperature of a high mass star?
30,000-52,000 degrees, Kelvin
How can you find the luminosity of a main sequence star?
You can find the luminosity of a main sequence star by measuring its apparent brightness and distance from Earth. Knowing the distance allows you to calculate the star's absolute brightness. Luminosity is then determined by comparing the absolute brightness of the star to that of the Sun, which has a known luminosity.
What does and H-R diagram relate a star's temperature to?
The Hertzsprung-Russell diagram (H-R diagram) shows the relationship between absolute magnitude, luminosity, classification, and effective temperature of stars. The diagram as originally conceived displayed the spectral type (effectively the surface temperature) of stars on the horizontal axis and the absolute magnitude (their intrinsic brightness) on the vertical axis.
Do star color indicates the absolute distance?
No, the color of a star does not directly indicate its absolute distance. Star color is related to its surface temperature, and stars of different temperatures can be located at varying distances from Earth. The brightness of a star, as measured by its apparent magnitude, is more indicative of its distance.
What does color have to do with a star's mass?
The color of a star is mainly related to the star's surface temperature. This is only remotely related to the star's mass; for example, high-mass stars can either be very hot (blue) or not-so-hot (red), depending on the phase in the star's life.
