High angular resolution broad-band imaging in the mid-infrared - The infrared bright galaxy NGC 34

Astronomy and Astrophysics – Astronomy

Scientific paper

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Infrared Sources (Astronomy), Seyfert Galaxies, Angular Resolution, Broadband, Infrared Astronomy Satellite

Scientific paper

A high angular resolution (1 arcsec) mid-IR image of the IR-bright galaxy NGC 34 is reported. The observation shows the mid-IR emission to be very compact, not greater than 2.3 arcsec x 1.7 arcsec (not greater than 870 x 640 pc, D = 78 Mpc, H(O) = 75 km/s per Mpc). This and previous observations indicate sizes smaller than predicted by starburst models for the emission. The achieved sensitivity, 15 mJy/sq rt minutes sq arcsec, is the highest sensitivity ever obtained for any observation with a mid-IR array camera.

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