Optical spectral properties of radio loud quasars along the main sequence
Abstract
We analyze the optical properties of Radio-Loud quasars along the Main Sequence (MS) of quasars. A sample of 355 quasars selected on the basis of radio detection was obtained by cross-matching the FIRST survey at 20cm and the SDSS DR12 spectroscopic survey. We consider the nature of powerful emission at the high-Fe ii end of the MS. At variance with the classical radio-loud sources which are located in the Population B domain of the MS optical plane, we found evidence indicating a thermal origin of the radio emission of the highly accreting quasars of Population A.
- Publication:
-
Nuclear Activity in Galaxies Across Cosmic Time
- Pub Date:
- January 2021
- DOI:
- 10.1017/S1743921320003191
- arXiv:
- arXiv:2004.12748
- Bibcode:
- 2021IAUS..356..310D
- Keywords:
-
- quasars;
- radio-loud;
- star formation;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 3 pages, 2 figures