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HIGH-VELOCITY BIPOLAR MOLECULAR EMISSION from AN AGN TORUS

Accepted version
Peer-reviewed

Type

Article

Change log

Abstract

We have detected in ALMA observations CO J = 6 - 5 emission from the nucleus of the Seyfert galaxy NGC 1068. The low-velocity (up to +/- 70 km/s relative to systemic) CO emission resolves into a 12x7 pc structure, roughly aligned with the nuclear radio source. Higher-velocity emission (up to +/- 400 km/s) is consistent with a bipolar outflow in a direction nearly perpendicular (roughly 80 degrees) to the nuclear disk. The position-velocity diagram shows that in addition to the outflow, the velocity field may also contain rotation about the disk axis. These observations provide compelling evidence in support of the disk-wind scenario for the AGN obscuring torus.

Description

Keywords

galaxies: active, galaxies: individual (NGC 1068), galaxies: nuclei, galaxies: Seyfert, quasars: general

Journal Title

Astrophysical Journal Letters

Conference Name

Journal ISSN

2041-8205
2041-8213

Volume Title

829

Publisher

American Astronomical Society
Sponsorship
Science and Technology Facilities Council (ST/K003119/1)
Science and Technology Facilities Council (ST/M001172/1)
FONDECYT (Grant ID: 3140436), Science and Technology Facilities Council