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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Jiang.et.al.2021.pdf | Pdf editoriale | 2.33 MB | Adobe PDF | View/Open |
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