ORIGIN: detectiOn and extRactIon of Galaxy emIssion liNes

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Ada Coda
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ORIGIN: detectiOn and extRactIon of Galaxy emIssion liNes

Post by Ada Coda » Wed Feb 26, 2020 3:18 am

ORIGIN: detectiOn and extRactIon of Galaxy emIssion liNes

Abstract: ORIGIN performs blind detection of faint emitters in MUSE datacubes. The algorithm is tuned to detect faint spatial-spectral emission signatures while allowing for a stable false detection rate over the data cube, and providing in the same time an automated and reliable estimation of the purity. ORIGIN implements a nuisance removal part based on a continuum subtraction combining a Discrete Cosine Transform and an iterative Principal Component Analysis and a detection part based on the local maxima of Generalized Likelihood Ratio test statistics obtained for a set of spatial-spectral profiles of emission line emitters. In addition, it performs a purity estimation in which the proportion of true emission lines is estimated from the data itself: the distribution of the local maxima in the noise only configuration is estimated from that of the local minima.

Credit: Mary, David; Bacon, Roland; Conseil, Simon; Piqueras, Laure; Schutz, Antony

Site: https://muse-origin.readthedocs.io

Bibcode: 2020ascl.soft02003M

Preferred citation method: https://ui.adsabs.harvard.edu/abs/2020arXiv200200214M

ID: ascl:2002.003

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