Q: Finding quasars in data i really hope that's the right place for this kind of questions, if not, please excuse my ignorance.
I am thinking about a way to find some objects in a spectrum, I can simulate combined spectrum data.
I have two templates T1 and T2 ( in this case the two templates are identical).
These templates represents the quasar spectrum.
I am looking for objects that their spectra are some linear combination:
A1*T1(z1) + A2*T2(z2) + noise.

I thought of cross correlation of an object with the combined spectra (after filtering the noise) , but it bothers me since the object im looking for can have any kind of liner combination and cross correalation with all possible linear combination sound pretty robust. It might be useful to generalize such a linear combination , it would be cool to hear some neat ideas or even reference for similar papers doing the same.
