Recent content by sarahrose

Can someone explain to me how shock waves from supernova or stellar winds can generate a superbubble? Does the energy from the shock get converted to thermal energy through compression?

how much is a nebular line widened by the doppler broadening due to thermal motion of gas particles? What is the spectrographic resolution required to resolve the line? I do not understand how to solve this problem. I've been given specific numbers of an HII region. How do I find the...

Does anybody know what on- the- spot approximations are and why they are accurate? Also, I cannot figure out why the temperature of an HII region does not depend on its density. any hints??