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Unveiling the central parsec region of an active galactic nucleus: The circinus nucleus in the near-infrared with the very large telescope

Abstract:

VLT J- to M'-band adaptive optics observations of the Circinus galaxy on parsec scales resolve a central bright Ks-band source with a FWHM size of 1.9 ± 0.6 pc. This source is only visible at wavelengths longward of 1.6 μm and coincides in position with the peak of the [Si VII] 2.48 μm coronal line emission. With respect to the peak of the central optical emission, the source is shifted by ∼0″15 (2.8 pc) to the southeast. Indeed, the Ks-band source defines the vertex of a fairly collimated be...

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Publisher copy:
10.1086/423422

Authors


Almudhna Prieto, M More by this author
Meisenheimer, K More by this author
Reunanen, J More by this author
Contini, M More by this author
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Publisher:
Institute of Physics Publishing
Journal:
Astrophysical Journal
Volume:
614
Issue:
1 I
Pages:
135-141
Publication date:
2004-10-10
DOI:
EISSN:
1538-4357
ISSN:
0004-637X
URN:
uuid:a6b42c07-e457-4f6b-a575-69b059ad5b75
Source identifiers:
190208
Local pid:
pubs:190208

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