Numerical Aspects of Extended Curve of Growth

University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

Author: Rehan Butt; [2013]

Keywords: rb; 1114;


In curve of growth, traditionally equivalent width is found for absorption lines of Gaussian, Lorentz and Voigt profile against flat continuum. Here, absorption against non-flat distributions is examined. These non-flat distributions are Gaussian and Lorentz distribution. Analytically equivalent widths for absorption against non-flat continuum are complicated integrals. It is impossible to solve these integrals analytically so I have solved them numerically. At low μ the absorption is independent on profile while the growth of absorption depends on profile at high μ, where μ is width.

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