(no subject)
Mar. 28th, 2006 11:35 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
stellar_muddleThat book meme:
1. Grab the nearest book.
2. Open it to page 161.
3. Find the fifth sentence.
4. Post the text of the sentence in your journal along with these instructions.
5. Don't search around and look for the coolest book you can find. Do what's actually next to you.
"The Observation and Analysis of Stellar Photospheres" by David F Gray. Yes, I am at work and oddly enough I am writing this while waiting for programs using these equations and others to generate a model spectrum.
And since they have finished running, I should get back to work. I wont waste time in trying to learn HTML markup for greek letters...
1. Grab the nearest book.
2. Open it to page 161.
3. Find the fifth sentence.
4. Post the text of the sentence in your journal along with these instructions.
5. Don't search around and look for the coolest book you can find. Do what's actually next to you.
The spectrum is computed using eg. (7.16),
[eqn for flux as 2 pi times an integral between negative infinity and infinity of a function involving the source function, optical depth as a function of wavelength, opacity as a function of wavelength and other numbers - I could do it in Latex...]
with Snu(tau0)= Bnu[T(tau0)] in the LTE case, and where the optical depth scales are related by
dx=d taunu/kappanu rho = d tau0/kappa0 rho
or
[eqn I ain't even going to attempt to try...]
"The Observation and Analysis of Stellar Photospheres" by David F Gray. Yes, I am at work and oddly enough I am writing this while waiting for programs using these equations and others to generate a model spectrum.
And since they have finished running, I should get back to work. I wont waste time in trying to learn HTML markup for greek letters...
