Inflows and Outflows in Nearby AGN from Integral Field Spectroscopy

被引:1
作者
Storchi-Bergmann, Thaisa [1 ]
机构
[1] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil
来源
CO-EVOLUTION OF CENTRAL BLACK HOLES AND GALAXIES | 2010年 / 267期
关键词
galaxies: active; galaxies: kinematics and dynamics; galaxies: nuclei; ACTIVE GALACTIC NUCLEI; SUPERMASSIVE BLACK-HOLE; NARROW-LINE REGION; CIRCUMNUCLEAR DUST; GEMINI NIFS; GALAXIES; GAS; ACCRETION; NGC-1097; QUASARS;
D O I
10.1017/S1743921310006502
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
I report recent results on the kinematics of the inner few hundred parsecs (pc) around nearby active galactic nuclei (AGN) at a sampling of a few pc to a few tens of pc, using optical and near-infrared (near-IR) integral field spectroscopy obtained with the Gemini telescopes. The stellar kinematics of the hosts comprised mostly of spiral galaxies are dominated by circular rotation in the plane of the galaxy. Inflows with velocities of similar to 50 km s(-1) have been observed along nuclear spiral arms in (optical) ionized gas emission for low-luminosity AGN and in (near-IR) molecular gas emission for higher-luminosity AGN. We have also observed gas rotating in the galaxy plane, sometimes in compact (few tens of pc) disks which may be fuelling the AGN. Outflows have been observed mostly in ionized gas emission from the narrow-line region, whose flux distributions and kinematics frequently correlate with radio flux distributions. Channel maps along the emission-line profiles reveal velocities as high as similar to 600 km s(-1). Mass outflow rates in ionized gas range from 10(-2) to 10(-3) M-circle dot yr(-1) and are 10-100 times larger than the mass accretion rates on to the AGN, supporting an origin for the bulk of the outflow in gas from the galaxy plane entrained by a nuclear jet or accretion disk wind.
引用
收藏
页码:290 / 298
页数:9
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