The main sequence of quasars: The taming of the extremes

The last few years have seen the confirmation of several trends associated with the quasar main sequence. The idea of a main sequence for quasars is relatively recent, and its full potential for the observational classification and contextualization of quasars' properties has yet to be fully ex...

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Detalles Bibliográficos
Autores: Marziani, Paola, Bon, Edi, Bon, Natasa, D'Onofrio, Mauro, Punsly, Brian, Śniegowska, Marzena, Czerny, BoŻena, Panda, Swayamtrupta, Martnez Aldama, Mary Loli, Deconto Machado, Alice, Olmo, Ascensión del, Negrete, C. Alenka, Dultzin, Deborah, Buendia, Tania, Garnica, Karla
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/282139
Acceso en línea:http://hdl.handle.net/10261/282139
Access Level:acceso abierto
Palabra clave:Galaxies: active
Galaxies: starburst
Quasars: emission lines
Quasars: general
Radio continuum: galaxies
Descripción
Sumario:The last few years have seen the confirmation of several trends associated with the quasar main sequence. The idea of a main sequence for quasars is relatively recent, and its full potential for the observational classification and contextualization of quasars' properties has yet to be fully exploited. The main sequence drivers are discussed in terms of the properties of extreme objects. We briefly summarize developments that constrain the viewing angle of the accretion disk in a particular class of quasars (extreme Population B, radiating at low Eddington ratio), as well as inferences on the chemical composition of the broad line emitting gas, and on the nature of radio emission along the quasar main sequence. © 2021 Wiley-VCH GmbH.

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