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[ascl:2510.016] pPXF-SEW: Full-spectrum fitting with penalized pixel-fitting and equivalent width extraction
pPXF-SEW implements a full‑spectrum fitting method that combines the penalized pixel‑fitting (pPXF, ascl:1210.002) technique with an “Equivalent Widths Spectrum” (SEW) approach. It derives stellar and gas kinematics via pPXF and extracts stellar‑population parameters and dust attenuation without assuming a prior attenuation curve. The code processes observed spectra and outputs fits to both continuum and line features, incorporating the SEW method’s linear treatment of equivalent widths to handle multiple galaxy components. pPXF-SEW can be applied to galaxy and stellar datasets for joint kinematic and population synthesis.
Code site:
https://pypi.org/project/ppxf-sew/
Described in:
https://ui.adsabs.harvard.edu/abs/2025MNRAS.540.1491L
Bibcode:
2025ascl.soft10016L
Preferred citation methods:
https://ui.adsabs.harvard.edu/abs/2025MNRAS.540.1491L https://ui.adsabs.harvard.edu/abs/2017MNRAS.466..798C

ascl:2510.016
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