If a main sequence star has a luminosity of 100 L what is its spectral type?

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If a main sequence star has a luminosity of 100 L what is its spectral type?

2007-03-22 15:58:03 · 2 answers · asked by C B 1 in Science & Mathematics ➔ Astronomy & Space

2 answers

Not enough information to answer. 100 L measured from where? (Presuming the 'L' is Lumens...)

Besides, the brightness of a star varies by the distance from the Earth. You need to look at a spectrographic print of the light to see where on the Main Sequence it is, or if it's on the main sequence at all. Check the web site below:

2007-03-22 16:45:19 · answer #1 · answered by edward_otto@sbcglobal.net 5 · 0⤊ 0⤋

"Oh, Be A Fine Girl (Guy), Kiss Me"

From largest to smallest mass stars, so I suspect that your question is "... has a luminosity of 100 (times the luminosity of the sun)..." and would be spectral type "Oh", oooops, I mean "O".

2007-03-22 23:27:29 · answer #2 · answered by stargazergurl22 4 · 0⤊ 0⤋