Redshift-dependent decomposition of theoptical spectrum of the quasar HE 0413−4031

The redshift determination in quasars with only broad emission line present creates a problem when high accuracy is needed. This in tern affects the decoposition of the spectrum into continuum, line emission (here Mg II line) and Fe II pseudo-continuum. Here we enclose the data behind the Figure 3, middle panel, from Zajacek et al. (20240, A&A, 683, Article Number A140. It presents the results based on the Southern African Large Telescope data, our Observation 14 of the quasar HE 0413−4031 The four sets show the Fe II net contribution according to the following models in the observedframe: two models for the old redshift z = 1.37648, d12 and VW01 templates with extra broadening, and two for the new redshift z = 1.39117,the KDP15 template, shift = 0, FWHM = 4200 km s−1, and the VW01 template with additional broadening. See the article for more detailed description. a) tytuł zbioru danych; Redshift-dependent decomposition of theoptical spectrum of the quasar HE 0413−4031 b) autora(ów) i ich afiliacje; Michal Zajaˇcek,, Swayamtrupta Panda, Ashwani Pandey, Raj Prince, Alberto Rodríguez-Ardila,, VikramJaiswal, Bo˙zena Czerny, Krzysztof Hryniewicz, Maciej Urbanowicz, Piotr Trzcionkowski, Marzena ´Sniegowska,Zuzanna Fałkowska, Mary Loli Martínez-Aldama, and Norbert Werner c) datę powstania danych i/lub daty gromadzenia; 2019 d) opis metodologii badawczej i narzędzi użytych do pozyskania danych: The data were collected using the Southern Africal Large Telescope. Following the previous studies on this source, we assume a single kinematic component for the MgII line shape (Za-jaˇcek et al. 2020; Prince et al. 2023). However, we take into account that MgII is a doublet, and this is included in our modeling, assuming the same widths for the two components, fixed separation. The value of the doublet ratio was optimized by Zajaˇceket al. (2020) using the mean spectrum. We use the same value of 1.9 in the current paper. The kinematic width, line position, and normalization are free parameters of the model. The underlying continuum is described as a power law with an arbitrary normal-ization and a slope. e) format i struktura danych; file has 7 columns, the first column gives the wavelength, the remaining columns give the data, the total model, and the model components. f) warunki udostępniania i licencjonowania danych; Creative Commons Attribution License g) adnotację o finansowaniu ze środków projektu i poprawny nr rejestracyjny projektu (Narodowe Centrum Nauki, numer projektu). The project waspartially supported by the Polish Funding Agency National Science Centre,project 2017/26/A/ST9/00756 (MAESTRO 9). BC and MZ acknowledge the OPUS-LAP/GA ˇCR-LA bilateral project (2021/43/I/ST9/01352/OPUS 22 andGF23-04053L).