A high resolution mid-infrared image of the starburst galaxy M82

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Maps, Astronomical Spectroscopy, Emission Spectra, Infrared Astronomy, Infrared Imagery, Infrared Spectra, Infrared Spectroscopy, Line Spectra, Starburst Galaxies, Astronomical Photography, Bandpass Filters, Cameras, Infrared Telescopes

Scientific paper

We have produced high-resolution images of the nuclear region of M82 with SpectroCam-10, a mid-infrared instrument at the Palomar 5 m telescope. These images were taken at 11.7 micrometer and 9.8 micrometer with a 1 micrometer filter bandpass at the diffraction limit of 0.6 arcsec, making them the highest resolution maps yet available of M82. In addition, we have obtained high-resolution (lambda/delta-lambda = 2000) maps of the velocity field of the nuclear disk of M82 in the 12.81 micrometer line emission of (Ne II). In these proceedings we present the 11.7 micrometer image, which will appear together with the 9.8 micrometer map and the (Ne II) spectra in a subsequent paper, now in preparation. This image shows very clearly a bridge structure joining the eastern and western clusters.

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