High-resolution mid-infrared observations of NGC 7469

Details High-resolution mid-infrared observations of NGC 7469 High-resolution mid-infrared observations of NGC 7469

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...425l..37m&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 425, no. 1, p. L37-L40

Astronomy and Astrophysics

Astronomy

32

Emission Spectra, Galactic Nuclei, Infrared Astronomy, Infrared Radiation, Infrared Spectra, Polycyclic Aromatic Hydrocarbons, Seyfert Galaxies, Starburst Galaxies, Infrared Astronomy Satellite, Radio Astronomy, Radio Emission, Radio Spectra, Very Large Array (Vla)

Scientific paper

We present a high-resolution 11.7 micrometer image of the starburst/Seyfert hybrid galaxy NGC 7469 using the Hale 5 m telescope at Palomar Observatory. Our map, with diffraction limited spatial resolution of 0.6 sec, shows a 3 sec diameter ring of emission around an unresolved nucleus. The map is similar to the Very Large Array (VLA) 6 cm map of this galaxy made with 0.4 sec resolution by Wilson et al. (1991). About half of the mid-infrared flux in our map emerges from the unresolved nucleus. We also present spatially resolved low resolution spectra that show that the 11.3 micrometer polycyclic aromatic hydrocarbon (PAH) feature comes from the circumnuclear ring but not from the nucleus of the galaxy.

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