F5 - spectrum of a star-forming region

if looking directly at stellar cores, the spectrum of the stellar cores can be seen directly

these will resemble a blackbody

looking at stellar cores through neutral gas, a back body along with characteristic absorption lines can be seen

the absorptions correspond to the energy jumps between quantum states of hydrogen

this observation only arises along one precise line of sight

looking at the star-forming region along any line of sight different than the cores, photons that have either been scattered by the neutral gas, or been isotopically reemitted after recombination or deexciting

spectrum will be rich in emission lines, mainly from the hydrogen series