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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
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Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/32234
Title: Linear spectropolarimetric analysis of fairall 9 with VLT/FORS2
Authors: Jiang, Bo-Wei
MARZIANI, Paola 
Savić, Đorđe
Shablovinskaya, Elena
Popović, Luka Č.
Afanasiev, Victor L.
Czerny, Bożena
Wang, Jian-Min
del Olmo, Ascensión
D'ONOFRIO, MAURO
Śniegowska, Marzena
MAZZEI, Paola 
Panda, Swayamtrupta
Issue Date: 2021
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 508
Issue: 1
First Page: 79
Abstract: The quasar main sequence appears to be an incredibly powerful tool to organize the diversity in large samples of type-1 quasars but the most important physical parameters governing it are still unclear. Here, we investigate the origin of the broadening and of a defining feature of Population B sources: a strong redward asymmetry of the Balmer emission lines. We focus on a prototypical source, Fairall 9. Spectropolarimetric data of the Fairall 9 broad H β and H α profiles allowed for a view of the geometric and dynamical complexity of the line emitting regions. Measurements (1) provided evidence of rotational motion; (2) were helpful to test the presence of polar and equatorial scatterers, and their association with non-virial motions. However, we suggest that the polarization properties appear to be more consistent with a warped disc geometry induced by Lense-Thirring precession.
URI: http://hdl.handle.net/20.500.12386/32234
URL: https://academic.oup.com/mnras/article/508/1/79/6343037?login=true
ISSN: 0035-8711
DOI: 10.1093/mnras/stab2273
Bibcode ADS: 2021MNRAS.508...79J
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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