ORBi: D'Onofrio Mauro - Fifty Years of Quasars. From Observations to Physical Parameters

Reference : Fifty Years of Quasars. From Observations to Physical Parameters


	Document type :	Parts of books : Contribution to collective works
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/131110

Title :	Fifty Years of Quasars. From Observations to Physical Parameters
Language :	English
Author, co-author :	D'Onofrio, Mauro [Dipartimento di Astronomia, Università degli Studi di Padova]
	Marziani, Paola [INAF, Osservatorio Astronomico di Padova]
	Sulentic, Jack W. [Instituto de Astrofísica de Andalucía (CSIC)]
	Shields, Greg [Department of Astronomy, University of Texas]
	Kaspi, Shai [School of Physics and Astronomy and the Wise Observatory, The Raymond and Beverly Sackler Faculty of Exact Science, Tel-Aviv University]
	Padovani, Paolo [European Southern Observatory]
	Hutsemekers, Damien [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
	McLure, Ross [Institute for Astronomy, Royal Observatory Edinburgh]
	Laor, Ari [Technion - Israel Institute of Technology Physics Department]
	Vestergaard, Marianne [The Dark Cosmology Centre, The Niels Bohr Institute, University of Copenhagen; Steward Observatory and Department of Astronomy, University of Arizona]
	Czerny, Bozena [Copernicus Astronomical Center]
	Hryniewicz, Krzysztof [Copernicus Astronomical Center]
	Dultzin, Deborah [Instituto de Astronomia, Universidad Nacional Autonoma de Mexico (UNAM))]
Publication date :	2012
Main document title :	Fifty Years of Quasars: From Early Observations and Ideas to Future Research
Editor :	D'Onofrio, M.
Publisher :	Springer
Collection and collection volume :	Astrophysics and Space Science Library, Volume 386
Pages :	287-336
Peer reviewed :	No
ISBN :	978-3-642-27563-0
City :	Heidelberg
Keywords :	[en] Physics
Abstract :	[en] Observational measures of AGNs allow us to directly infer some basic physical properties of quasars including (1) physical conditions and chemical abundances in the broad-line emitting gas as well as (2) radius of the line-emitting region, (3) black hole mass, (4) and Eddington ratio. In this chapter, we seek information on how these quantities are measured. One of the surprises of recent times, that would have shocked the discoverers in the 1960s are the large BH masses and high chemical abundances inferred for even some of the highest redshift quasars known.
Target :	Researchers ; Professionals ; Students ; General public
Permalink :	http://hdl.handle.net/2268/131110
DOI :	10.1007/978-3-642-27564-7_5
Other URL :	http://adsabs.harvard.edu/abs/2012fyq..book..287D

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