ASTA02H3 Lecture Notes - Balmer Series, Stellar Classification
Document Summary
Approx. temperature of the sun results in weak balmer lines. 10,000 k (excited) results in strong balmer lines. O stars low h because at high temperatures, most h atoms are ionized. At k and m stars, what happens at absorption lines. (if t is very high: no chemical bonds can form, no molecules) Oh be a fine boy/girl kiss me now. O, b, a, f, b, g, k, m, n. Describes red/brown dwarfs which are very faint in the spectrum. Three factors that decide the destiny of a star. 1. size of a star surface area. All three equations are the same if. Can be replaced by a constant (ex. ) Q. by how much does the luminosity of the sun change if the surface temperature is increased by ( " a qu ) Cross out: c, , and, because they are constants.
