Fixed error in the star simulation - were getting pixel values way bigger than 65,000. This was because of the Stot distribution used.

Last week, I used the scipy.skewnorm to vary Stot. Instead, I've made a function so I can use it to fit to the profiles of stars.

Skewed_gaussian.PNG

SkewedGaussianFunction.png

This was then used to fit the data taken from the real stars.

Skewed_Gaussian_Fit_to_Real_Stars.png

However, the sigma seems to be too big, not representative of what was gotten with the unskewed fit. The sigma here is actually xi, so the difference originates from there.

BothFitsonrealstars.png

-- BekiChafer - 08 Dec 2017

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng BothFitsonrealstars.png r1 manage 60.8 K 08 Dec 2017 - 02:17 RebekahChafer1 Gaussian and skewed gaussian on one graph
PNGpng SkewedGaussianFunction.png r1 manage 69.2 K 08 Dec 2017 - 02:15 RebekahChafer1 Example of Skewed Gaussian Function
PNGpng Skewed_Gaussian_Fit_to_Real_Stars.png r1 manage 44.9 K 08 Dec 2017 - 02:16 RebekahChafer1 Skewed Gaussian Fit to real data
PNGpng Skewed_gaussian.PNG r1 manage 20.5 K 08 Dec 2017 - 02:15 RebekahChafer1 Function used for skewed gaussian

Physics WebpagesRHUL WebpagesCampus Connect • Royal Holloway, University of London, Egham, Surrey TW20 0EX; Tel/Fax +44 (0)1784 434455/437520

Topic revision: r1 - 08 Dec 2017 - RebekahChafer1

 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2021 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding RHUL Physics Department TWiki? Send feedback