Iterative techniques for the decomposition of long-slit spectra

Details Iterative techniques for the decomposition of long-slit spectra Iterative techniques for the decomposition of long-slit spectra

2003-01-07

arxiv.org/abs/astro-ph/0301102v1

Astronomy and Astrophysics

Astrophysics

Accepted by AJ. 20 pages, 4 figures

Scientific paper

10.1086/368144

Two iterative techniques are described for decomposing a long-slit spectrum into the individual spectra of the point sources along the slit and the spectrum of the underlying background. One technique imposes the strong constraint that the spectrum of the background is spatially-invariant; the other relaxes this constraint. Both techniques are applicable even when there are numerous overlapping point sources superposed on a structurally-complex background. The techniques are tested on simulated as well as real long-slit data from the ground and from space.

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