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What would be the approximate temperature of a star with a luminosity 100 times greatera than the sun?
Assuming main sequence stars - the temperature would be about 15,000 Kelvin.
Does Rigel have a higher luminosity and a lower temperature the the sun?
No.
Which two stars have the most similar luminosity and surface temperature?
alpha centari and the sun
What is the approximate temperature of the sun?
One thousand degree
What is the luminosity of the sun?
The absolute luminosity is about 3.839×1026 W, or 3.839×1033 erg/second. The comparative luminosity of an astronomical object is based on the Sun, so it has a relative luminosity of 1.
What would be the approximate temperature of a star with a luminosity 100 times greatera than the sun?
Assuming main sequence stars - the temperature would be about 15,000 Kelvin.
Does Rigel have a higher luminosity and a lower temperature the the sun?
No.
Which two stars have the most similar luminosity and surface temperature?
alpha centari and the sun
What the approximate surface temperature of the sun?
6,000
What is the approximate luminosity of a main-sequence star whose mass is one-tenth that of the Sun?
There's no single answer, since luminosity depends not only of mass but stage and temperature. However, most 0.1 Solar mass stars are going to be red dwarfs, so consider Wolf 359, a nearby star, as an example. It's about 0.09 Solar mass and its luminosity varies from about 0.0009 to 0.0011.
What is the approximate temperature of the sun?
One thousand degree
What star has a surface temperature 9000k and luminosity about 1 to 20 times greater than the sun?
Sirius
How is star luminosity measured?
A star's luminosity is measured according to the relevance to the sun. Basically for example, if a star is 8,300 degrees Celsius and has a luminosity of 0.001; the luminosity is compared to the sun.
What is the luminosity of the sun?
The absolute luminosity is about 3.839×1026 W, or 3.839×1033 erg/second. The comparative luminosity of an astronomical object is based on the Sun, so it has a relative luminosity of 1.
How do you determine a stars luminosity?
To determine a star's luminosity is from size and temperature.
Are main sequence stars all alike in their luminosity and temperature?
No. Main sequence stars vary greatly in both temperature and luminosity. The least massive stars, red dwarfs, can have temperatures as low as 2,300 Kelvin and luminosity as low as 0.015% that of the sun. The most massive stars, which are blue in color can have temperatures as high as 50,000 Kelvin and may be hundreds of thousands times more luminous than the sun.
Is the temperature of the sun about 30 million degrees fahrenhheit?
That is the approximate temperature at the center of the sun. The visible surface is much cooler at about 10,000 degrees.
