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Package: alfa @ 2.2

Synopsis

Automated line fitting algorithm

Description

This package provides ALFA, which can identify and fit hundreds of lines in emission line spectra in just a few seconds with following features:

  • A population of synthetic spectra is generated using a reference line catalogue.

  • The goodness of fit for each synthetic spectrum is calculated. The best sets of parameters are retained and the rest discarded.

  • A new population of synthetic spectra is obtained by averaging pairs of the best performers.

  • A small fraction of the parameters of the lines in the new generation are randomly altered.

  • The process repeats until a good fit is obtained.

Home page
https://nebulousresearch.org/codes/alfa/
Location
gnu/packages/astronomy.scm (line: 107, column: 2)
License

Derivations

SystemTargetDerivationBuild status
x86_64-linux/gnu/store/l8x24027kg0188x47q1rzlad73s4l2yi-alfa-2.2.drv
x86_64-linuxx86_64-w64-mingw32/gnu/store/jzdsma63ypbi0rs85a3sss9a988mw6nz-alfa-2.2.drv
x86_64-linuxriscv64-linux-gnu/gnu/store/x8v9vbck84yhbqrlby6h6avp23g5az9w-alfa-2.2.drv
x86_64-linuxpowerpc-linux-gnu/gnu/store/b1abb3swg5f7pn6qpzrki6pdb9vrngxp-alfa-2.2.drv
x86_64-linuxpowerpc64-linux-gnu/gnu/store/cgm778av745q5cmc7qwga471d3r599g8-alfa-2.2.drv
x86_64-linuxpowerpc64le-linux-gnu/gnu/store/8hdc9f7aqply9vk193nlzs4faw3yq86k-alfa-2.2.drv
x86_64-linuxmips64el-linux-gnu/gnu/store/3mq676wixl6ggszp7mn71m5h5zw6syy8-alfa-2.2.drv
x86_64-linuxi686-w64-mingw32/gnu/store/26fw88bk3pmxzikfs1xs2a5prwl3qj7v-alfa-2.2.drv
x86_64-linuxi586-pc-gnu/gnu/store/cya0r1d4r4gs8b68sd0g587z2gm9c5hw-alfa-2.2.drv
x86_64-linuxarm-linux-gnueabihf/gnu/store/49z6y308krrx2bq6m0q16m299k1719vv-alfa-2.2.drv
x86_64-linuxaarch64-linux-gnu/gnu/store/4qm00gglj38zngk4nxs8qbmvgq5lky7d-alfa-2.2.drv
riscv64-linux/gnu/store/bs9iwsfawj35sxpz6rsl5h21gimxgqsb-alfa-2.2.drv
powerpc-linux/gnu/store/858rxiv9rqvd6w9brpq175yy5fs1zccx-alfa-2.2.drv
    powerpc64le-linux/gnu/store/7ahf0j8hs8rgs6jkl4q24wa9kxdxzlip-alfa-2.2.drv
    mips64el-linux/gnu/store/bzi24dkyankxplwlpggvri48bjxn2q3r-alfa-2.2.drv
      i686-linux/gnu/store/il4v7iranyph0y63sxkkrk7dzxs9kbzh-alfa-2.2.drv
      i586-gnu/gnu/store/pb0qxfi25102fxgpkslkf84rw1q716is-alfa-2.2.drv
      armhf-linux/gnu/store/4xaqphm65pccz4wx9yg3yxn06dhp6nyq-alfa-2.2.drv
      aarch64-linux/gnu/store/h4q6g5qml5id73h2s10gpvx9viaah451-alfa-2.2.drv

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