CAOSP abstracts, Volume: 50, No.: 1, year: 2020

Author(s): Jankov, I.; Ilić, D.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 50, no. 1, p. 350-359.
Date: 1/2020
Title: Narrow lines correlations in an SDSS sample of type 1 quasars
Keyword(s): galaxies: active, multivariate analysis: principal component analysis
Pages: 350 -- 359
DOI: https://doi.org/10.31577/caosp.2020.50.1.350
NASA ADS Abstract Service: 2020CoSka..50..350J
Citation:
License: This work is licensed under a Creative Commons Attribution 4.0 International License

Abstract: Investigation of quasar emission line properties and relationships between spectral parameters is important for understanding the physical mechanisms that originate inside different regions of the active galactic nuclei. In this paper, we investigate the optical spectral parameters of type 1 quasars taken from the Sloan Digital Sky Survey Data Release 7 Quasar Catalog (Shen et al., 2011). Spectral parameters, such are equivalent widths and full widths at half maximum of both narrow and broad lines are taken into account. We perform the analysis of correlation matrix and principal component analysis of our sample. We obtain that the narrow line Baldwin effect is significant enough and deserves further investigation. We provide the correlation coefficients and slope values for Baldwin effect in several narrow lines.