A near-infrared study of the multi-phase outflow in the type-2 quasar J1509+0434

Cristina Ramos Almeida; Jose A. Acosta-Pulido; Clive N. Tadhunter; Carlos Gonzalez-Fernandez; Claudia Cicone; Mateo Fernandez-Torreiro

doi:10.1093/mnrasl/slz072

paper

A near-infrared study of the multi-phase outflow in the type-2 quasar J1509+0434

arXiv:1905.06288 · doi:10.1093/mnrasl/slz072

Abstract

Based on new near-infrared spectroscopic data from the instrument EMIR on the 10.4 m Gran Telescopio Canarias (GTC) we report the presence of an ionized and warm molecular outflow in the luminous type-2 quasar J150904.22+043441.8 (z = 0.1118). The ionized outflow is faster than its molecular counterpart, although the outflow sizes that we derive for them are consistent within the errors (1.34 $\pm$ 0.18 kpc and 1.46 $\pm$ 0.20 kpc respectively). We use these radii, the broad emission-line luminosities and in the case of the ionized outflow, the density calculated from the trans-auroral [OII] and [SII] lines, to derive mass outflow rates and kinetic coupling efficiencies. Whilst the ionized and warm molecular outflows represent a small fraction of the AGN power ( $\leq$ 0.033% and 0.0001% of L $_{b o l}$ respectively), the total molecular outflow, whose mass is estimated from an assumed warm-to-cold gas mass ratio of 6 $\times 1 0^{- 5}$ , has a kinetic coupling efficiency of $\sim$ 1.7%L $_{b o l}$ . Despite the large uncertainty, this molecular outflow represents a significant fraction of L $_{b o l}$ and it could potentially have a significant impact on the host galaxy. In addition, the quasar spectrum reveals bright and patchy narrow Pa $α$ emission extending out to 4 arcsec (8 kpc) South-East and North-West from the active nucleus.

6 pages, 4 figures, accepted for publication in MNRAS Letters

A near-infrared study of the multi-phase outflow in the type-2 quasar J1509+0434

Abstract

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