Power Law

The Power Law input flux distribution is another useful case present in the UVES ETC. In this case the input flux distribution $F(\lambda)$ is defined as:

$$F(\lambda)=F_{0}\cdot\left(\frac{\lambda}{\lambda_{ref}}\right)^{i}$$ (2.4)

where $\lambda$ is the wavelength at which the flux is detected, $\lambda_{ref}$ is the reference wavelength of the power law, i is the power law index number, in general a real number, and the reference flux F₀ is given by the (eq. 2.5).