Unveiling the warm molecular outflow component of type-2 quasars with SINFONI

M. V. Zanchettin; C. Ramos Almeida; A. Audibert; J. A. Acosta-Pulido; P. H. Cezar; E. Hicks; A. Lapi; J. Mullaney

doi:10.1051/0004-6361/202453224

paper

Unveiling the warm molecular outflow component of type-2 quasars with SINFONI

arXiv:2502.12800 · doi:10.1051/0004-6361/202453224

Abstract

We present seeing-limited (0.8 arcsec) near-infrared integral field spectroscopy data of the type-2 quasars (QSO2s) SDSS J135646.10+102609.0 (J1356) and SDSS J143029.89+133912.1 (J1430, the Teacup), both belonging to the Quasar Feedback (QSOFEED) sample. The nuclear K-band spectra (1.95-2.45 \textmu m) of these radio-quiet QSO2s reveal several $H_{2}$ emission lines, indicative of the presence of a warm molecular gas reservoir (T $\geq$ 1000 K). We measure nuclear masses of 5.9, 4.1, and 1.5 $\times 1 0^{3} M_{⊙}$ in the inner 0.8 arcsec diameter region of the Teacup, J1356 north (J1356N), and south nuclei, respectively. The total warm $H_{2}$ mass budget is $\sim 4.5$ and $\sim 1.3 \times 1 0^{4} M_{⊙}$ for the Teacup and J1356N, implying warm-to-cold molecular gas ratios of $1 0^{- 6}$ . The warm molecular gas kinematics, traced with the $H_{2}$ 1-0S(1) and S(2) emission lines, is consistent with that of the cold molecular phase, traced by ALMA CO emission at higher angular resolution (0.2 and 0.6 arcsec). In J1430, we detect the blue- and red-shifted sides of a compact warm molecular outflow extending up to 1.9 kpc and with velocities of 450 km/s. In J1356 only the red-shifted side is detected, with a radius of up to 2.0 kpc and velocity of 370 km/s. The outflow masses are 2.6 and 1.5 $\times 1 0^{3} M_{⊙}$ for the Teacup and J1356N, and the warm-to-cold gas ratios in the outflows are 0.8 and 1 $\times 1 0^{- 4}$ , implying that the cold molecular phase dominates the mass budget. We measure warm molecular mass outflow rates of 6.2 and 2.9 $\times 1 0^{- 4} M_{⊙} / y r$ for the Teacup and J1356N, approximately 0.001\% of the total mass outflow rate. We find an enhancement of velocity dispersion in the $H_{2}$ 1-0S(1) residual dispersion map of the Teacup, both along and perpendicular to the compact radio jet direction. This enhanced turbulence can be reproduced by simulations of jet-ISM interactions.

Accepted for publication on A&A

Unveiling the warm molecular outflow component of type-2 quasars with SINFONI

Abstract

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