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2DFFT: Measuring Galactic Spiral Arm Pitch Angle

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Ada Coda
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2DFFT: Measuring Galactic Spiral Arm Pitch Angle

Postby Ada Coda » Tue Aug 30, 2016 4:46 pm

2DFFT: Measuring Galactic Spiral Arm Pitch Angle

Abstract: 2DFFT utilizes two-dimensional fast Fourier transformations of images of spiral galaxies to isolate and measure the pitch angles of their spiral arms; this provides a quantitative way to measure this morphological feature and allows comparison of spiral galaxy pitch angle to other galactic parameters and test spiral arm genesis theories. 2DFFT requires fourn.c from Numerical Recipes in C (Press et al. 1989).

Credit: Davis, Benjamin L.; Berrier, Joel C.; Shields, Douglas W.; Kennefick, Julia; Kennefick, Daniel; Seigar, Marc S.; Lacy, Claud H. S.; Puerari, Ivânio

Site: http://d.umn.edu/~msseigar/2DFFT.html
http://adsabs.harvard.edu/abs/2012ApJS..199...33D

Bibcode: 2016ascl.soft08015D

Preferred citation method: http://adsabs.harvard.edu/abs/2012ApJS..199...33D

ID: ascl:1608.015

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