Subarcsecond Emission in Seyfert Galaxies: The Nuclear Component in the [ITAL]L[/ITAL] and [ITAL]M[/ITAL] Bands | Zendy

M. Prieto | Zendy; J. Reunanen | Zendy; Jari Kotilainen | Zendy

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Subarcsecond Emission in Seyfert Galaxies: The Nuclear Component in the [ITAL]L[/ITAL] and [ITAL]M[/ITAL] Bands

Author(s) -

M. Prieto,

J. Reunanen,

Jari Kotilainen

Publication year - 2002

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/341201

Subject(s) - physics , astrophysics , galaxy , surface brightness , astronomy , luminous infrared galaxy , infrared , telescope

We present deep L- and M- band imaging with ISAAC on the ESO VLT withunprecedented spatial resolution of the nearby Seyfert 2 galaxies NGC 7496 andNGC 7582 and the Seyfert 1 galaxy NGC 7213. The unresolved nuclear componentdominates the emission within the central 90 pc region, while the host galaxyaccounts for up to 50 % of the integrated emission at both wavelengths withinthe detected sizes of of 1 kpc in the L-band and 0.5 kpc in the M-band. Theoverall morphology of the extended component follows the general isophotepattern defined by the near-infrared continuum of the galaxies. However, thecentral 300 pc regions show much more ordered elliptical isophotes than in thenear-infrared. In particular, emission in the L- and M-bands shows well definedcentral point sources in the two Seyfert 2s.Comment: 4 pages, 4 figures. Accepted for publication in ApJ Letter

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