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Outflows in the Seyfert 2 galaxy NGC5643 traced by the [SIII] emission

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arxiv 1807.02743 v1 pith:EJUIQAYN submitted 2018-07-08 astro-ph.GA

classification astro-ph.GA
keywords siiistellarvelocitygalaxykinematicslambdaalongattributed
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We use Gemini Multi-Object Spectrograph (GMOS) Integral Field Unit (IFU) observations of the inner 285$\times$400 pc$^2$ region of the Seyfert 2 galaxy NGC 5643 to map the [SIII]$\lambda9069$ emission-line flux distribution and kinematics, as well as the stellar kinematics, derived by fitting the CaII$\lambda\lambda\lambda$8498,8542,8662 triplet, at a spatial resolution of 45 pc. The stellar velocity field shows regular rotation, with a projected velocity of 100 km/s and kinematic major axis along Position Angle $PA=-36^\circ$. A ring of low stellar velocity dispersion values ($\sim$70 km/s), attributed to young/intermediate age stellar populations, is seen surrounding the nucleus with radius of 50 pc. We found that the [SIII] flux distribution shows an elongated structure along the east-west direction and its kinematics is dominated by outflows within a bi-cone at an ionized gas outflow rate of 0.3 M$_\odot$ yr$^{-1}$. In addition, velocity slices across the [SIII]$\lambda9069$ emission-line reveal a kinematic component attributed to rotation of gas in the plane of the galaxy.

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  1. The Quasar Feedback Survey: Ionised Outflows in type 2 QSOs with MUSE data

    astro-ph.GA 2026-08 conditional novelty 6.0 of 10

    Electron densities from [Ar IV] lines in 16 type 2 QSOs imply outflow mass rates and kinetic powers roughly 1 dex lower than assuming n_e=1000 cm^-3, plus a positive density-velocity correlation above 630 km/s.

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