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Ground-based near-infrared imaging of the HD141569 circumstellar disk

A. Boccaletti·J. C. Augereau·F. Marchis·J. Hanh
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Abstract

We present the first ground-based near-infrared image of the circumstellar disk around the post-Herbig Ae/Be star HD141569A initially detected with the HST. Observations were carried out in the near-IR (2.2 $μ$m) at the Palomar 200-inch telescope using the adaptive optics system PALAO. The main large scale asymmetric features of the disk are detected on our ground-based data. In addition, we measured that the surface brightness of the disk is slightly different than that derived by HST observations (at 1.1 $μ$m and 1.6 $μ$m). We interpret this possible color-effect in terms of dust properties and derive a minimal

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A. Boccaletti, J. C. Augereau, F. Marchis, J. Hanh. 2002-11-29. Ground-based near-infrared imaging of the HD141569 circumstellar disk. https://doi.org/10.1086/346019

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