Infrared light curves of the central object of NGC 2346 - The shape of the obscuring cloud

Astronomy and Astrophysics – Astronomy

Scientific paper

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A Stars, Infrared Astronomy, Interstellar Matter, Light Curve, Planetary Nebulae, Astronomical Photometry, Cosmic Dust, Eclipsing Binary Stars, Molecular Clouds

Scientific paper

Infrared light curves of the central object of NGC 2346 show that the observed flux originates from the central A-type star and a warm circumstellar dust cloud. Two eclipses are seen in the J and H bands instead of the single eclipse previously reported from visual measurements. No light modulation is present at longer wavelengths. A simple model in terms of the passage of an elongated cloud can account for most of the existing observations.

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