How to calculate object temperature from line intensities

[ck99]

Homework Statement

This isn't really a coursework question, but I thought this might be the best place for it. I have some data on two different CO line emissions from an object. Can I work out the temperature of that object by using the ratio between the intensities of the two lines, and then using something like Wiens law? I am happy to assume that the emitter is a black body, but I don't know how to solve for T except if I know the peak emission wavelength.

 

[Simon Bridge]

If you know where the line spectra you have fit into the overall CO spectra ... I imagine you may be able to fit a BB distribution over your data... Of course, the more lines you have the better the fit will be.

http://www.cv.nrao.edu/course/astr534/MolecularSpectra.html