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What is the spectral class of a main sequence star with a luminosity 0.001 times that of the Sun?
Wiki User
∙ 13y ago
See related link and you'll be able to work it out.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoThe Sun is a G2 star, so G2.
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What is the luminosity of an Antares?
Antares or Alpha Scorpii is a red supergiant star of spectral type M1.5 Iab. It is about 65,000 times more luminous than our sun.
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.
What star has the surface temperature of approximatly 9000 k and luminosity 1 to 20 times greater then the suns luminosity?
There are millions of stars that fit that description. On the Main Sequence a star needs a spectrum of type A to be around 9000 degrees, and 1 to 20 times the luminosity of the Sun means an absolute magnitude in the range 1.2 to 4.7. For example Sirius.
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.
What is the luminosity of Betelgeuse?
Betelgeuse has about 140,000 times the luminosity of our sun or about 5.37×1031 watts.
What is the lifetime for this star in years There is a star elsewhere that has 10 times the mass of the Sun but a luminosity which is 100 thousand times that of the Sun?
If you look at the Spectral classes of stars, you will see that this star is a medium sized Blue-white star(3-18 MSun, 95-52000 LSun, Spectral class B). The average main sequence lifespan of this type of star is, according to the table, is 11-400 million years.
What is the luminosity of an Antares?
Antares or Alpha Scorpii is a red supergiant star of spectral type M1.5 Iab. It is about 65,000 times more luminous than our sun.
What type of star is Alcor?
Alcor is a hot, white A5V main sequence star having a luminosity about 13 times that of the sun. The spectral type implies that Alcor has an effective temperature of 8500 K, a diameter 1.7 times that of the sun, and a mass of about 2.2 solar masses. Alcor is a variable star of Delta Scuti type; see Caph.
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.
What star has the surface temperature of approximatly 9000 k and luminosity 1 to 20 times greater then the suns luminosity?
There are millions of stars that fit that description. On the Main Sequence a star needs a spectrum of type A to be around 9000 degrees, and 1 to 20 times the luminosity of the Sun means an absolute magnitude in the range 1.2 to 4.7. For example Sirius.
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.
Measurements indicate that a certain star has a very high luminosity 100000 times your sun but yet has a temperature that is cooler than the sun?
It could be a main sequence star.
What is the luminosity of Betelgeuse?
Betelgeuse has about 140,000 times the luminosity of our sun or about 5.37×1031 watts.
What is a Polaris star luminosity?
The main star in the Polaris system has a luminosity which is 2500 times that of the Sun.
Is rigel a dwarf star?
No Rigel is a huge, blue supergiant of spectral class B8 Ia, Rigel has an intrinsic brightness about 40,000 times as luminous as that of the sun.
Why is alpha centauri as luminosity 1.6 times that of the sun?
Alpha Centauri is as luminosity is 1.6 times that of the sun because it fuses hydrogen and helium in its core at a higher rate.
What is the luminosity for the star Sheraton?
About 11 times the luminosity of our Sun which is about 4 x 10^33 (to the power of 33) erg/sec.
