High-velocity Bipolar Molecular Emission from an AGN Torus
Date Issued
2016
Author(s)
Gallimore, Jack F.
•
Elitzur, Moshe
•
Maiolino, Roberto
•
•
O'Dea, Christopher P.
•
Lutz, Dieter
•
Baum, Stefi A.
•
•
Impellizzeri, C. M. V.
•
Davies, Richard
•
Kimball, Amy E.
•
Sani, Eleonora
Abstract
We have detected in ALMA observations CO J=6\to 5 emission from the nucleus of the Seyfert galaxy NGC 1068. The low-velocity (up to ±70 km s-1 relative to systemic) CO emission resolves into a 12 × 7 pc structure, roughly aligned with the nuclear radio source. Higher-velocity emission (up to ±400 km s-1) is consistent with a bipolar outflow in a direction nearly perpendicular (≃80°) 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 active galactic nucleus obscuring torus.
Volume
829
Issue
1
Start page
L7
Issn Identifier
2041-8205
Ads BibCode
2016ApJ...829L...7G
Rights
open.access
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