IAA authors:
del Olmo, Ascensión;Machado, Alice Deconto
Authors:
Marziani, Paola;Sniegowska, Marzena;Panda, Swayamtrupta;Czerny, Bożena;Negrete, C. Alenka;Dultzin, Deborah;Garnica, Karla;Martínez-Aldama, Mary Loli;del Olmo, Ascensión;D'Onofrio, Mauro;Machado, Alice Deconto;Ganci, Valerio;Extreme Team
Journal:
Research Notes of the American Astronomical Society
Abstract:
Highly accreting quasars show fairly distinctive properties in their optical, UV, and X spectra, and are easy to recognize because of their specific location in the quasar main sequence: they are the strongest optical FeII emitters. They show a surprisingly high rate of radio detections and, at variance with the classical radio-loud (jetted) sources, the origin of their radio emission is probably "thermal." The chemical composition of the broad line emitting gas implies high metallicity values, above 10 times solar. A fraction of highly accreting quasars at intermediate and high redshift might therefore be in a particular evolutionary stage that is unobscured albeit still involving a contribution of nuclear and circum-nuclear star formation in their multifrequency properties. * Contribution presented at the 237th meeting of the AAS.
URL:
https://ui.adsabs.harvard.edu/#abs/2021RNAAS...5...25M/abstract
Keywords:
Active galactic nuclei;16