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Ultraluminous Galactic Nuclei at 12.5μm, 0.′6

Published online by Cambridge University Press:  03 August 2017

Eric Keto ,
Roger Ball ,
J. F. Arens ,
Garrett Jernigan  and
Margaret Meixner
Eric Keto
Affiliation:
Lawrence Livermore Natl. Lab. POB 808, L413 Livermore, CA 94550 USA
Roger Ball
Affiliation:
Univ. of California, Space Science Lab. Berkeley, CA 94720 USA
J. F. Arens
Affiliation:
Univ. of California, Space Science Lab. Berkeley, CA 94720 USA
Garrett Jernigan
Affiliation:
Univ. of California, Space Science Lab. Berkeley, CA 94720 USA
Margaret Meixner
Affiliation:
Dept. of Astronomy, Univ. of California, Berkeley, CA 94720 USA

Abstract

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We report on the first sub-arcsecond resolution mid-IR images of the nuclei of galaxies from the IRAS ultraluminous sample. This sample contains galaxies which emit most of their energy in the far-infrared (10-100μm) and have luminosities approaching that of quasars. Previous observations in the mid-IR using single element detectors suggest that the IR luminosity is derived from a region smaller than the instrumental aperture, typically 5″(1.6 kpc at 65 Mpc). Our observations are capable of imaging the morphology of the mid-IR emission region to a factor of eight smaller than previously known.

Type
XIII- IRAS Ultraluminous Objects and Quasars
Information
Symposium - International Astronomical Union , Volume 146: Dynamics of Galaxies and their Molecular Cloud Distributions , 1991 , pp. 433
Copyright
Copyright © Kluwer 1991