•Surface Temperature 5800
K (from lmax
or spectral type)
–Not all that hot by laboratory
standards
–
•Central Temperature 15
´ 106 K (explained
later)
–Central temperature IS very high
•
•Luminosity (L) 3.8 ´ 1026 J/s ( L = sT4surface ´ 4 p R2sun)
( L = Fat Earth ´ 4 p R21 AU)
–
–Will be important for understanding energy
generation in Sun