Optical and <scp>UV</scp> properties of a radio‐loud and a radio‐quiet Population A quasar at high redshift

Different properties of quasars may be observed and analysed through the many ranges electromagnetic spectrum. Pioneering studies showed that an "H-R diagram" for was needed to organize these data, more than two dimensions were necessary: a four dimensional Eigenvector (4DE1) parameter space proposed. The 4DE1 makes use independent observational obtained from optical UV emission lines, as well soft-X rays. "optical plane", also known quasar Main Sequence (MS), identifies different spectral types in order describe consistent picture QSOs. In this work we present spectroscopic analysis focused on comparison between sources, one radio-loud (PKS2000-330, z = 3.7899) radio-quiet (Q1410+096, 3.3240), both showing Population A properties. Optical spectra infrared with VLT/ESO, additional measures fitting archive spectra. performed non-linear multi-component decomposition line profiles. Results are shown highlight effects radio-loudness their share similar very close MS classification while presenting significant differences data. Both sources show blueshifts lines but important general behaviour. While source Q1410+096 shows typical Pop spectrum intensities shapes CIV1549 SiIV1392, strong PKS2000-330 closely resembles population B quasars.