High Spatial Resolution Mid‐Infrared Observations of Five Seyfert Galaxies | Zendy

B. T. Soifer | Zendy; G. Neugebauer | Zendy; K. Matthews | Zendy; E. Egami | Zendy; L. Armus | Zendy

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High Spatial Resolution Mid‐Infrared Observations of Five Seyfert Galaxies

Author(s) -

B. T. Soifer,

G. Neugebauer,

K. Matthews,

E. Egami,

L. Armus

Publication year - 2004

Publication title -

publications of the astronomical society of the pacific

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.294

H-Index - 172

eISSN - 1538-3873

pISSN - 0004-6280

DOI - 10.1086/420872

Subject(s) - physics , astrophysics , galaxy , surface brightness , luminous infrared galaxy , telescope , astronomy , infrared , angular resolution (graph drawing) , active galactic nucleus , brightness , infrared telescope , nucleus , mathematics , combinatorics , biology , microbiology and biotechnology

High spatial resolution images at 12.5 μm of the nuclei of five nearby Seyfert galaxies—I Zwicky 1, NGC 1320, NGC 2992, M81, and NGC 7479—have been obtained with the 10 m Keck Telescope. The angular size limits indicate that under typical conditions the Keck Telescope shows an unresolved nucleus for these active galactic nuclei. In all cases, the lower limit to the infrared surface brightness is above 3 × 1012 L⊙ kpc−2; this argues that nuclear starbursts do not contribute significantly to the infrared luminosities in these nuclei.

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