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arXiv · 2108.00983

Linear Spectropolarimetric Analysis of Fairall 9 with VLT/FORS2

Bo-Wei Jiang·Paola Marziani·Đorđe Savić·Elena Shablovinskaya·Luka Č. Popović·Victor L. Afanasiev·Bożena Czerny·Jian-Min Wang·Ascensión del Olmo·Mauro D'Onofrio·Marzena Śniegowska·Paola Mazzei·Swayamtrupta Panda
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Abstract

The quasar Main Sequence (MS) 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$\beta$ and H$\alpha$ 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.

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Bo-Wei Jiang, Paola Marziani, Đorđe Savić, Elena Shablovinskaya, Luka Č. Popović, Victor L. Afanasiev, Bożena Czerny, Jian-Min Wang, Ascensión del Olmo, Mauro D'Onofrio, Marzena Śniegowska, Paola Mazzei, Swayamtrupta Panda. 2021-08-02. Linear Spectropolarimetric Analysis of Fairall 9 with VLT/FORS2. https://doi.org/10.1093/mnras%2Fstab2273

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