2024-03-28T16:47:24Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1815462020-05-29T07:29:32Zcom_10261_97com_10261_4col_10261_350
Quasars: From the Physics of Line Formation to Cosmology
Marziani, Paola
Bon, Edi
Bon, Natasa
Olmo, Ascensión del
Martínez-Aldama, M. L.
D’Onofrio, Mauro
Dultzin, D.
Negrete, C. Alenka
Stirpe, G. M.
Consejo Superior de Investigaciones Científicas (España)
Ministry of Education, Science and Technological Development (Serbia)
Consejo Nacional de Ciencia y Tecnología (México)
Ministerio de Economía y Competitividad (España)
Universidad Nacional Autónoma de México
Black hole physics
Cosmology
Quasar spectroscopy
Cosmological parameters
Ionized gas
Broad line region
Quasars accreting matter at very high rates (known as extreme Population A (xA) or super-Eddington accreting massive black holes) provide a new class of distance indicators covering cosmic epochs from the present-day Universe up to less than 1 Gyr from the Big Bang. The very high accretion rate makes it possible that massive black holes hosted in xA quasars can radiate at a stable, extreme luminosity-to-mass ratio. This in turn translates into stable physical and dynamical conditions of the mildly ionized gas in the quasar low-ionization line emitting region. In this contribution, we analyze the main optical and UV spectral properties of extreme Population A quasars that make them easily identifiable in large spectroscopic surveys at low- (z . 1) and intermediate-z (2 . z . 2.6), and the physical conditions that are derived for the formation of their emission lines. Ultimately, the analysis supports the possibility of identifying a virial broadening estimator from low-ionization line widths, and the conceptual validity of the redshift-independent luminosity estimates based on virial broadening for a known luminosity-to-mass ratio
2019-05-16T20:01:49Z
2019-05-16T20:01:49Z
2019-02-04
2019-05-16T20:01:49Z
artículo
Atoms 7(1): 18 (2019)
2218-2004
http://hdl.handle.net/10261/181546
10.3390/atoms7010018
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100003339
http://dx.doi.org/10.13039/501100003141
http://dx.doi.org/10.13039/501100005739
Publisher's version
http://dx.doi.org/10.3390/atoms7010018
Sí
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2013-42227-P
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2016-76682-C3-1-P
http://creativecommons.org/licenses/by-nc-sa/4.0/
openAccess
Multidisciplinary Digital Publishing Institute