Spectropolarimetry of NGC 3783 and Mrk 509: Evidence for powerful nuclear winds in Seyfert 1 Galaxies - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2021

Spectropolarimetry of NGC 3783 and Mrk 509: Evidence for powerful nuclear winds in Seyfert 1 Galaxies

P Lira
  • Fonction : Auteur
M Kishimoto
  • Fonction : Auteur
R Campos
  • Fonction : Auteur
D Axon
  • Fonction : Auteur
M Elvis
  • Fonction : Auteur
A Lawrence
  • Fonction : Auteur
B Peterson
  • Fonction : Auteur
A Robinson
  • Fonction : Auteur

Résumé

ABSTRACT We present results from high signal-to-noise optical spectropolarimetric observations of the Seyfert 1 galaxies NGC 3783 and Mrk 509 in the 3500–7000 Å range. We find complex structure in the polarized emission for both objects. In particular, Position Angle (PA) changes across the Balmer lines show a distinctive ‘M’-shaped profile that had not been observed in this detail before, but could represent a common trait in Seyfert 1 galaxies. In fact, while this shape is observed in all Balmer lines in NGC 3783, Mrk 509 transitions into a ‘M’-shaped PA profile for higher transitions lines. We have modelled the observed profiles using the STOKES radiative transfer code and assuming that the scattering region is co-spatial with the BLR and outflowing. The results give compelling new evidence for the presence of nuclear winds in these two Seyfert 1 galaxies.
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Dates et versions

hal-03337662 , version 1 (21-04-2023)

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P Lira, M Kishimoto, R Goosmann, R Campos, D Axon, et al.. Spectropolarimetry of NGC 3783 and Mrk 509: Evidence for powerful nuclear winds in Seyfert 1 Galaxies. Monthly Notices of the Royal Astronomical Society, 2021, 507 (1), pp.579-593. ⟨10.1093/mnras/stab1751⟩. ⟨hal-03337662⟩
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