# science

posted by .

what would be the absolute magnitude and color of a main sequence star with a temperature of 25,000 kelvin?

HELP!

## Similar Questions

1. ### science, absolute zero

what is absolute zero? if 0 kelvin is the lowest temperature we can ever get, then does it mean that -273 degree Celsius is the lowest temperature we can reach?
2. ### pre-calc

How bright a star appears can depend on how much light the star actually emits and how far away it is. The stellar magnitude scale can be adjusted to account for distance as follows: m_2 - m_1 = log (b_1/b_2) Here, M refers to a star's …
3. ### Advanced Functions

How bright a star appears can depend on how much light the star actually emits and how far away it is. The stellar magnitude scale can be adjusted to account for distance as follows: M2-M1 = log (b1 / b2) Here, M refers to a star's …
4. ### Math

How bright a star appears can depend on how much light the star actually emits and how far away it is. The stellar magnitude scale can be adjusted to account for distance as follows: M2-M1 = log (b1 / b2) Here, M refers to a star's …
5. ### Astrophysics

(a) From the absorption lines, we were able to determine that the star (phi)-Fictus has spectral classification F7V and color index B-V=0/48. What is the mass M(phi) of the star in solar masses?
6. ### Science: Astronomy

How many 0.75 -M main sequence stars would it take to equal the luminosity of one 15 -M star?
7. ### Astrophysics

Star Power and Temperature Star A and Star B Consider two stars that are the same size (they have the same diameter), but have different surface temperatures. Let’s say Star A’s temperature is 3000 K and Star B’s temperature …
8. ### science

Which of the following determine how long a star remains on the main sequence Answer Are MASS TEMPERATURE BRIGHTNESS ALL ABOVE THANK YOU
9. ### Astronomy

Hi, can you please check my work? I really need to do well on this. 1. What properties of a star are needed to calculate the stars luminosity?
10. ### Astronomy

1. What color are stars that are very hot and very bright?

More Similar Questions